| PHAALCHR | The time (in hours) the examinee last drank alcohol such as beer, wine, or liquor. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHAALCMN | The time (in minutes) the examinee last drank alcohol such as beer, wine, or liquor. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHAANTHR | The time (in hours) the examinee last had antacids, laxatives or anti-diarrheals. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHAANTMN | The time (in minutes) the examinee last had antacids, laxatives or anti-diarrheals. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHACOFHR | The time (in hours) since the examinee last drank coffee or tea with cream or sugar. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHACOFMN | The time (in minutes) since the examinee last drank coffee or tea with cream or sugar. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHAFSTHR | The time (in hours) between when the examinee last ate or drank anything other than water and the time of the venipuncture. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHAFSTMN | The time (in minutes) between when the examinee last ate or drank anything other than water and the time of the venipuncture. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHAGUMHR | The time (in hours) the examinee last had gum, breath mints, lozenges or cough drops, or other cough or cold remedies. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHAGUMMN | The time (in minutes) the examinee last had gum, breath mints, lozenges or cough drops, or other cough or cold remedies. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHASUPHR | The time (in hours) the examinee last had dietary supplements such as vitamins and minerals. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHASUPMN | The time (in minutes) the examinee last had dietary supplements such as vitamins and minerals. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHDSESN | Session in which SP was examined | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHQ020 | Coffee or tea with cream or sugar? [Include milk or non-dairy creamers.] | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHQ030 | Alcohol, such as beer, wine, or liquor? | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHQ040 | Gum, breath mints, lozenges or cough drops, or other cough or cold remedies? | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHQ050 | Antacids, laxatives, or anti-diarrheals? | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| PHQ060 | Dietary supplements such as vitamins and minerals? [Include multivitamins and single nutrient supplements.] | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_FASTQX | Fasting Questionnaire | 2017 | 2020 | Laboratory | None |
| LBXGH | Glycohemoglobin (%) | P_GHB | Glycohemoglobin | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_GHB | Glycohemoglobin | 2017 | 2020 | Laboratory | None |
| LBDLDL | LDL-Cholesterol, Friedewald equation (mg/dL).
LBDLDL = (LBXTC-(LBDHDD + LBXTR/5), round to 0 decimal places) for LBXTR less than 400 mg/dL, and missing for LBXTR greater than 400 mg/dL.
LBDHDD from public release file P_HDL | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| LBDLDLM | LDL-Cholesterol, Martin-Hopkins equation (mg/dL).
LBDLDLM = (LBXTC-(LBDHDD + LBXTR/Adjustable Factor), round to 0 decimal places) for LBXTR less than 400 mg/dL, and missing for LBXTR greater than 400 mg/dL.
LBDHDD from public release file P_HDL | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| LBDLDLN | LBDLDLN =
(LBXTC/0.948 – LBDHDD/0.971 – (LBXTR/8.56 + (LBXTR * (LBXTC – LBDHDD))/2140 – LBXTR^2/16100) – 9.44), round 0 decimal places) for LBXTR less than 800 mg/dL, and missing for LBXTR GE 800 mg/dL.
^2 stands for power=2, or squared.
LBDHDD from public release file P_HDL | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| LBDLDLSI | LDL-Cholesterol, Friedewald equation (mmol/L) | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| LBDLDMSI | LDL-Cholesterol, Martin-Hopkins equation (mmol/L) | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| LBDLDNSI | LDL-Cholesterol, NIH equation 2 (mmol/L) | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| LBDTRSI | Triglyceride (mmol/L) | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| LBXTR | Triglyceride (mg/dL) | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| WTSAFPRP | Fasting Subsample Weight | P_TRIGLY | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2017 | 2020 | Laboratory | None |
| LBDHDD | Direct HDL-Cholesterol (mg/dL) | P_HDL | Cholesterol - High - Density Lipoprotein (HDL) | 2017 | 2020 | Laboratory | None |
| LBDHDDSI | Direct HDL-Cholesterol (mmol/L) | P_HDL | Cholesterol - High - Density Lipoprotein (HDL) | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_HDL | Cholesterol - High - Density Lipoprotein (HDL) | 2017 | 2020 | Laboratory | None |
| LBDTCSI | Total Cholesterol (mmol/L) | P_TCHOL | Cholesterol - Total | 2017 | 2020 | Laboratory | None |
| LBXTC | Total Cholesterol (mg/dL) | P_TCHOL | Cholesterol - Total | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent Sequence Number | P_TCHOL | Cholesterol - Total | 2017 | 2020 | Laboratory | None |
| LBDGLUSI | Fasting Glucose (mmol/L) | P_GLU | Plasma Fasting Glucose | 2017 | 2020 | Laboratory | None |
| LBXGLU | Fasting Glucose (mg/dL) | P_GLU | Plasma Fasting Glucose | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_GLU | Plasma Fasting Glucose | 2017 | 2020 | Laboratory | None |
| WTSAFPRP | Fasting Subsample Weight | P_GLU | Plasma Fasting Glucose | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_ALB_CR | Albumin & Creatinine - Urine | 2017 | 2020 | Laboratory | None |
| URDACT | Albumin creatinine ratio (mg/g)
| P_ALB_CR | Albumin & Creatinine - Urine | 2017 | 2020 | Laboratory | None |
| URDUCRLC | Creatinine, urine comment code | P_ALB_CR | Albumin & Creatinine - Urine | 2017 | 2020 | Laboratory | None |
| URDUMALC | Albumin, urine comment code
| P_ALB_CR | Albumin & Creatinine - Urine | 2017 | 2020 | Laboratory | None |
| URXCRS | Creatinine, urine (umol/L)
| P_ALB_CR | Albumin & Creatinine - Urine | 2017 | 2020 | Laboratory | None |
| URXUCR | Creatinine, urine (mg/dL)
| P_ALB_CR | Albumin & Creatinine - Urine | 2017 | 2020 | Laboratory | None |
| URXUMA | Albumin, urine (ug/mL) | P_ALB_CR | Albumin & Creatinine - Urine | 2017 | 2020 | Laboratory | None |
| URXUMS | Albumin, urine (mg/L)
| P_ALB_CR | Albumin & Creatinine - Urine | 2017 | 2020 | Laboratory | None |
| LBDBANO | Basophils number (1000 cells/uL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBDEONO | Eosinophils number (1000 cells/uL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBDLYMNO | Lymphocyte number (1000 cells/uL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBDMONO | Monocyte number (1000 cells/uL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBDNENO | Segmented neutrophils number (1000 cell/uL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXBAPCT | Basophils percent (%) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXEOPCT | Eosinophils percent (%) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXHCT | Hematocrit (%) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXHGB | Hemoglobin (g/dL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXLYPCT | Lymphocyte percent (%) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXMC | Mean cell hemoglobin concentration (g/dL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXMCHSI | Mean cell hemoglobin (pg) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXMCVSI | Mean cell volume (fL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXMOPCT | Monocyte percent (%) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXMPSI | Mean platelet volume (fL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXNEPCT | Segmented neutrophils percent (%) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXNRBC | Nucleated red blood cells | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXPLTSI | Platelet count (1000 cells/uL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXRBCSI | Red blood cell count (million cells/uL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXRDW | Red cell distribution width (%) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBXWBCSI | White blood cell count (1000 cells/uL) | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_CBC | Complete Blood Count with 5-Part Differential in Whole Blood | 2017 | 2020 | Laboratory | None |
| LBDIRNSI | Iron frozen, Serum (umol/L) | P_FETIB | Iron Status - Serum | 2017 | 2020 | Laboratory | None |
| LBDPCT | Transferrin Saturation (%) | P_FETIB | Iron Status - Serum | 2017 | 2020 | Laboratory | None |
| LBDTIB | Total Iron Binding Capacity TIBC (ug/dL) | P_FETIB | Iron Status - Serum | 2017 | 2020 | Laboratory | None |
| LBDTIBSI | Total Iron Binding Capacity (TIBC) (umol/L) | P_FETIB | Iron Status - Serum | 2017 | 2020 | Laboratory | None |
| LBDUIBLC | Unsaturated Iron Binding Capacity (UIBC), Serum Comment Code | P_FETIB | Iron Status - Serum | 2017 | 2020 | Laboratory | None |
| LBDUIBSI | Unsaturated Iron Binding Capacity (UIBC), Serum (umol/L) | P_FETIB | Iron Status - Serum | 2017 | 2020 | Laboratory | None |
| LBXIRN | Iron frozen, Serum (ug/dL) | P_FETIB | Iron Status - Serum | 2017 | 2020 | Laboratory | None |
| LBXUIB | Unsaturated Iron Binding Capacity (UIBC), Serum (ug/dL) | P_FETIB | Iron Status - Serum | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_FETIB | Iron Status - Serum | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| URDFLOW1 | Urine #1 Flow Rate (mL/min) | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| URDFLOW2 | Urine #2 Flow Rate (mL/min) | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| URDFLOW3 | Urine #3 Flow Rate (mL/min) | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| URDTIME1 | The time between last urination and the first urine sample collection in minutes | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| URDTIME2 | The time between the first and second urine sample collections in minutes | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| URDTIME3 | The time between the second and third urine sample collections in minutes | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| URXVOL1 | The volume of urine collection #1 (mL) | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| URXVOL2 | The volume of urine collection #2 (mL) | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| URXVOL3 | The volume of urine collection #3 (mL) | P_UCFLOW | Urine Flow Rate | 2017 | 2020 | Laboratory | None |
| LBDSALSI | Albumin, refrigerated serum(g/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSATLC | Alanine Aminotransferase (ALT) Comment Code | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSBUSI | Blood Urea Nitrogen (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSCASI | Total Calcium (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSCHSI | Total Cholesterol, refrigerated serum (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSCRSI | Creatinine, refrigerated serum (umol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSGBSI | Globulin (g/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSGLSI | Glucose, refrigerated serum (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSGTLC | Gamma Glutamyl Transferase (GGT) Comment Code | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSIRSI | Iron, refrigerated serum (umol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSPHSI | Phosphorus (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSTBLC | Total Bilirubin Comment Code | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSTBSI | Total Bilirubin (umol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSTPSI | Total Protein (g/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSTRSI | Triglycerides, refrigerated serum (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBDSUASI | Uric acid (umol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSAL | Albumin, refrigerated serum (g/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSAPSI | Alkaline Phosphatase (ALP) (IU/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSASSI | Aspartate Aminotransferase (AST) (U/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSATSI | Alanine Aminotransferase (ALT) (U/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSBU | Blood Urea Nitrogen (mg/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSC3SI | Bicarbonate (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSCA | Total Calcium (mg/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSCH | Total Cholesterol, refrigerated serum (mg/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSCK | Creatine Phosphokinase (CPK) (IU/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSCLSI | Chloride (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSCR | Creatinine, refrigerated serum (mg/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSGB | Globulin (g/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSGL | Glucose, refrigerated serum (mg/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSGTSI | Gamma Glutamyl Transferase (GGT) (IU/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSIR | Iron, refrigerated serum (ug/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSKSI | Potassium (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSLDSI | Lactate Dehydrogenase (LDH) (IU/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSNASI | Sodium (mmol/L) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSOSSI | Osmolality (mmol/Kg) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSPH | Phosphorus (mg/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSTB | Total Bilirubin (mg/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSTP | Total Protein (g/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSTR | Triglycerides, refrigerated serum (mg/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXSUA | Uric acid (mg/dL) | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent Sequence Number | P_BIOPRO | Standard Biochemistry Profile | 2017 | 2020 | Laboratory | None |
| LBXIGG | Cytomegalovirus (CMV) IgG | P_CMV | Cytomegalovirus IgG & IgM Antibodies - Serum | 2017 | 2020 | Laboratory | None |
| LBXIGGA | Cytomegalovirus (CMV) IgG avidity | P_CMV | Cytomegalovirus IgG & IgM Antibodies - Serum | 2017 | 2020 | Laboratory | None |
| LBXIGM | Cytomegalovirus (CMV) IgM | P_CMV | Cytomegalovirus IgG & IgM Antibodies - Serum | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_CMV | Cytomegalovirus IgG & IgM Antibodies - Serum | 2017 | 2020 | Laboratory | None |
| LBDHRPLC | High-Sensitivity C-Reactive Protein (hs-CRP) Comment Code | P_HSCRP | High-Sensitivity C-Reactive Protein | 2017 | 2020 | Laboratory | None |
| LBXHSCRP | High-Sensitivity C-Reactive Protein (hs-CRP) (mg/L) | P_HSCRP | High-Sensitivity C-Reactive Protein | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent Sequence Number | P_HSCRP | High-Sensitivity C-Reactive Protein | 2017 | 2020 | Laboratory | None |
| LBDFERSI | Ferritin (ug/L) | P_FERTIN | Ferritin | 2017 | 2020 | Laboratory | None |
| LBXFER | Ferritin (ng/mL) | P_FERTIN | Ferritin | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_FERTIN | Ferritin | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_UCPREG | Urine Pregnancy Test | 2017 | 2020 | Laboratory | None |
| URXPREG | Urine Pregnancy Result | P_UCPREG | Urine Pregnancy Test | 2017 | 2020 | Laboratory | None |
| LBXHIV1 | HIV-1 antibody | P_HIV_R | HIV Antibody Test | 2017 | 2020 | Laboratory | RDC Only |
| LBXHIV2 | HIV-2 antibody | P_HIV_R | HIV Antibody Test | 2017 | 2020 | Laboratory | RDC Only |
| LBXHIVC | HIV-1, 2 Combo Test | P_HIV_R | HIV Antibody Test | 2017 | 2020 | Laboratory | RDC Only |
| LBXHNAT | HIV Confirmatory Test | P_HIV_R | HIV Antibody Test | 2017 | 2020 | Laboratory | RDC Only |
| SEQN | Respondent sequence number | P_HIV_R | HIV Antibody Test | 2017 | 2020 | Laboratory | RDC Only |
| LBXHE2 | Herpes Simplex Virus Type 2 | P_HSV_R | Herpes Simplex Virus Type-1 and Type-2 - Youth | 2017 | 2020 | Laboratory | RDC Only |
| SEQN | Respondent sequence number | P_HSV_R | Herpes Simplex Virus Type-1 and Type-2 - Youth | 2017 | 2020 | Laboratory | RDC Only |
| LBXHE1 | Herpes Simplex Virus Type 1 | P_HSVA_R | Herpes Simplex Virus Type-1 and Type-2 | 2017 | 2020 | Laboratory | RDC Only |
| LBXHE2 | Herpes Simplex Virus Type 2 | P_HSVA_R | Herpes Simplex Virus Type-1 and Type-2 | 2017 | 2020 | Laboratory | RDC Only |
| SEQN | Respondent sequence number | P_HSVA_R | Herpes Simplex Virus Type-1 and Type-2 | 2017 | 2020 | Laboratory | RDC Only |
| LBDINLC | Insulin Comment Code | P_INS | Insulin | 2017 | 2020 | Laboratory | None |
| LBDINSI | Insulin (pmol/L) | P_INS | Insulin | 2017 | 2020 | Laboratory | None |
| LBXIN | Insulin (μU/mL) | P_INS | Insulin | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_INS | Insulin | 2017 | 2020 | Laboratory | None |
| WTSAFPRP | Fasting Subsample Weight | P_INS | Insulin | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_MGEA_R | Mycoplasma genitalium- Urine - Adult | 2017 | 2020 | Laboratory | RDC Only |
| URXMYGE | Mycoplasma genitalium, Urine | P_MGEA_R | Mycoplasma genitalium- Urine - Adult | 2017 | 2020 | Laboratory | RDC Only |
| SEQN | Respondent sequence number | P_MGEN_R | Mycoplasma genitalium- Urine -Youth | 2017 | 2020 | Laboratory | RDC Only |
| URXMYGE | Mycoplasma genitalium, Urine | P_MGEN_R | Mycoplasma genitalium- Urine -Youth | 2017 | 2020 | Laboratory | RDC Only |
| SEQN | Respondent sequence number. | P_CHLA_R | Chlamydia - Urine - Adult | 2017 | 2020 | Laboratory | RDC Only |
| URXUCL | Chlamydia, Urine | P_CHLA_R | Chlamydia - Urine - Adult | 2017 | 2020 | Laboratory | RDC Only |
| SEQN | Respondent sequence number | P_CHLM_R | Chlamydia - Urine - Youth | 2017 | 2020 | Laboratory | RDC Only |
| URXUCL | Chlamydia, Urine | P_CHLM_R | Chlamydia - Urine - Youth | 2017 | 2020 | Laboratory | RDC Only |
| SEQN | Respondent sequence number. | P_TRIA_R | Trichomonas - Urine - Adult | 2017 | 2020 | Laboratory | RDC Only |
| URXUTRI | Trichomonas, Urine | P_TRIA_R | Trichomonas - Urine - Adult | 2017 | 2020 | Laboratory | RDC Only |
| SEQN | Respondent sequence number. | P_TRIC_R | Trichomonas - Urine - Youth | 2017 | 2020 | Laboratory | RDC Only |
| URXUTRI | Trichomonas, Urine | P_TRIC_R | Trichomonas - Urine - Youth | 2017 | 2020 | Laboratory | RDC Only |
| LBDBCDLC | Blood cadmium comment code | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDBCDSI | Blood cadmium (nmol/L) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDBMNLC | Blood manganese comment code | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDBMNSI | Blood manganese (nmol/L) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDBPBLC | Blood lead comment code | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDBPBSI | Blood lead (umol/L) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDBSELC | Blood selenium comment code | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDBSESI | Blood selenium (umol/L) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDTHGLC | Blood mercury, total comment code | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDTHGSI | Blood mercury, total (nmol/L) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBXBCD | Blood cadmium (ug/L) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBXBMN | Blood manganese (ug/L) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBXBPB | Blood lead (ug/dL) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBXBSE | Blood selenium(ug/L) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBXTHG | Blood mercury, total (ug/L) | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_PBCD | Lead, Cadmium, Total Mercury, Selenium, & Manganese - Blood | 2017 | 2020 | Laboratory | None |
| LBDBPBLC | Blood lead comment code | P_PBY_R | Lead - Blood - Youth | 2017 | 2020 | Laboratory | RDC Only |
| LBDBPBSI | Blood lead (umol/L) | P_PBY_R | Lead - Blood - Youth | 2017 | 2020 | Laboratory | RDC Only |
| LBXBPB | Blood lead (ug/dL) | P_PBY_R | Lead - Blood - Youth | 2017 | 2020 | Laboratory | RDC Only |
| SEQN | Respondent sequence number | P_PBY_R | Lead - Blood - Youth | 2017 | 2020 | Laboratory | RDC Only |
| LBDBGELC | Mercury, ethyl comment code | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| LBDBGESI | Mercury, ethyl (nmol/L) | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| LBDBGMLC | Mercury, methyl comment code | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| LBDBGMSI | Mercury, methyl (nmol/L) | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| LBDIHGLC | Mercury, inorganic comment code | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| LBDIHGSI | Mercury, inorganic (nmol/L) | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| LBXBGE | Mercury, ethyl (ug/L) | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| LBXBGM | Mercury, methyl (ug/L) | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| LBXIHG | Inorganic mercury, blood (ug/L) | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_IHGEM | Inorganic, Ethyl and Methyl - Blood | 2017 | 2020 | Laboratory | None |
| LBDRFO | RBC folate (ng/mL) | P_FOLATE | Folate - RBC | 2017 | 2020 | Laboratory | None |
| LBDRFOSI | RBC folate (nmol/L) | P_FOLATE | Folate - RBC | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_FOLATE | Folate - RBC | 2017 | 2020 | Laboratory | None |
| WTFOLPRP | Folate & Folate Form Weight Pre-Pandemic | P_FOLATE | Folate - RBC | 2017 | 2020 | Laboratory | None |
| LBDFOT | Serum total folate (ng/mL) | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBDFOTSI | Serum total folate (nmol/L) | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBDSF1LC | 5-Methyl-tetrahydrofolic comment code | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBDSF2LC | Folic acid comment code | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBDSF3LC | 5-Formyl-tetrahydrofolate comment code | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBDSF4LC | Tetrahydrofolate comment code | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBDSF5LC | 5,10-Methenyl-tetrahydrofolate comment code | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBDSF6LC | Mefox oxidation product comment code | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBXSF1SI | 5-Methyl-tetrahydrofolate (nmol/L) | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBXSF2SI | Folic acid (nmol/L) | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBXSF3SI | 5-Formyl-tetrahydrofolate (nmol/L) | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBXSF4SI | Tetrahydrofolate (nmol/L) | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBXSF5SI | 5,10-Methenyl-tetrahydrofolate (nmol/L) | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBXSF6SI | Mefox oxidation product (nmol/L) | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| WTFOLPRP | Folate & Folate Form Weight Pre-Pandemic | P_FOLFMS | Folate Forms - Total & Individual - Serum | 2017 | 2020 | Laboratory | None |
| LBDBCOLC | Cobalt Comment Code | P_CRCO | Chromium & Cobalt | 2017 | 2020 | Laboratory | None |
| LBDBCOSI | Cobalt (nmol/L) | P_CRCO | Chromium & Cobalt | 2017 | 2020 | Laboratory | None |
| LBDBCRLC | Chromium Comment Code | P_CRCO | Chromium & Cobalt | 2017 | 2020 | Laboratory | None |
| LBDBCRSI | Chromium (nmol/L) | P_CRCO | Chromium & Cobalt | 2017 | 2020 | Laboratory | None |
| LBXBCO | Cobalt (ug/L) | P_CRCO | Chromium & Cobalt | 2017 | 2020 | Laboratory | None |
| LBXBCR | Chromium (ug/L) | P_CRCO | Chromium & Cobalt | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_CRCO | Chromium & Cobalt | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URDUA3LC | Urinary Arsenous acid comment code | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URDUA5LC | Urinary Arsenic acid comment code | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URDUABLC | Urinary Arsenobetaine comment code | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URDUACLC | Urinary Arsenocholine comment code | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URDUDALC | Urinary Dimethylarsinic acid comment code | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URDUMMAL | Urinary Monomethylarsonic acid comment code | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URXUAB | Urinary Arsenobetaine (ug/L) | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URXUAC | Urinary Arsenocholine (ug/L) | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URXUAS3 | Urinary Arsenous acid (ug/L) | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URXUAS5 | Urinary Arsenic acid (ug/L) | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URXUDMA | Urinary Dimethylarsinic acid (ug/L) | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| URXUMMA | Urinary Monomethylarsonic acid (ug/L) | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_UAS | Arsenics - Speciated - Urine | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_UTAS | Arsenic - Total - Urine | 2017 | 2020 | Laboratory | None |
| URDUASLC | Arsenic, Total - Urine Comment Code | P_UTAS | Arsenic - Total - Urine | 2017 | 2020 | Laboratory | None |
| URXUAS | Arsenic, Total - Urine (ug/L) | P_UTAS | Arsenic - Total - Urine | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_UTAS | Arsenic - Total - Urine | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_UCM | Chromium - Urine | 2017 | 2020 | Laboratory | None |
| URDUCMLC | Chromium, Urine Comment Code | P_UCM | Chromium - Urine | 2017 | 2020 | Laboratory | None |
| URXUCM | Chromium, Urine (ug/L) | P_UCM | Chromium - Urine | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_UCM | Chromium - Urine | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_UHG | Mercury: Inorganic - Urine | 2017 | 2020 | Laboratory | None |
| URDUHGLC | Mercury, Urine Comment Code | P_UHG | Mercury: Inorganic - Urine | 2017 | 2020 | Laboratory | None |
| URXUHG | Urine Mercury (ug/L) | P_UHG | Mercury: Inorganic - Urine | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_UHG | Mercury: Inorganic - Urine | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_UIO | Iodine - Urine | 2017 | 2020 | Laboratory | None |
| URDUIOLC | Iodine, urine comment code | P_UIO | Iodine - Urine | 2017 | 2020 | Laboratory | None |
| URXUIO | Iodine, urine (ug/L) | P_UIO | Iodine - Urine | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_UIO | Iodine - Urine | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_UNI | Nickel - Urine | 2017 | 2020 | Laboratory | None |
| URDUNILC | Nickel, Urine Comment Code | P_UNI | Nickel - Urine | 2017 | 2020 | Laboratory | None |
| URXUNI | Nickel, Urine (ug/L) | P_UNI | Nickel - Urine | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_UNI | Nickel - Urine | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUBALC | Urinary Barium Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUCDLC | Urinary Cadmium Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUCOLC | Urinary Cobalt Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUCSLC | Urinary Cesium Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUMNLC | Urinary Mn Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUMOLC | Urinary Molybdenum Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUPBLC | Urinary Lead Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUSBLC | Urinary Antimony Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUSNLC | USN Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUTLLC | Urinary Thallium Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URDUTULC | Urinary Tungsten Comment Code | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUBA | Barium, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUCD | Cadmium, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUCO | Cobalt, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUCS | Cesium, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUMN | Manganese, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUMO | Molybdenum, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUPB | Lead, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUSB | Antimony, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUSN | Tin, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUTL | Thallium, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| URXUTU | Tungsten, urine (ug/L) | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_UM | Metals - Urine | 2017 | 2020 | Laboratory | None |
| LBD2DFLC | Blood 2,5-Dimethylfuran Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBD4CELC | Blood 1,1,1,2-Tetrachloroethane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDV06LC | Blood Hexane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDV07LC | Blood Heptane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDV08LC | Blood Octane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDV1DLC | Blood 1,2-Dichlorobenzene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDV2ALC | Blood 1,2-Dichloroethane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDV3BLC | Blood 1,3-Dichlorobenzene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDV4CLC | Blood Tetrachloroethene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVBFLC | Blood Bromoform Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVBMLC | Blood Bromodichloromethane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVBZLC | Blood Benzene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVC6LC | Blood Cyclohexane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVCBLC | Blood Chlorobenzene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVCFLC | Blood Chloroform Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVCMLC | Blood Dibromochloromethane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVCTLC | Blood Carbon Tetrachloride Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVDBLC | Blood 1,4-Dichlorobenzene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVDELC | Blood 1,2-Dibromoethane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVEALC | Blood Ethyl Acetate Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVEBLC | Blood Ethylbenzene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVECLC | Blood Chloroethane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVEELC | Blood Diethyl Ether Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVFNLC | Blood Furan Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVFTLC | Blood aaa-Trifluorotoluene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVHTLC | Blood Tetrahydrofuran Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVIBLC | Blood Isobutyronitrile Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVIPLC | Blood Isopropylbenzene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVMCLC | Blood Methylene Chloride Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVMELC | Blood Methyl-tert-butyl ether (MTBE) Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVMKLC | Blood Methyl Isobutyl Ketone Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVMPLC | Blood Methylcyclopentane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVNBLC | Blood Nitrobenzene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVOXLC | Blood o-Xylene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVTCLC | Blood Trichloroethene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVTELC | Blood 1,1,1-Trichloroethane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVTPLC | Blood 1,2,3-Trichloropropane Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVVBLC | Blood Vinyl Bromide Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVXYLC | Blood m-/p-Xylene Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBDVZBLC | Blood Benzonitrile Comment Code | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBX2DF | Blood 2,5-Dimethylfuran (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBX4CE | Blood 1,1,1,2-Tetrachloroethane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXV06 | Blood Hexane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXV07N | Blood Heptane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXV08N | Blood Octane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXV1D | Blood 1,2-Dichlorobenzene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXV2A | Blood 1,2-Dichloroethane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXV3B | Blood 1,3-Dichlorobenzene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXV4C | Blood Tetrachloroethene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVBF | Blood Bromoform (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVBM | Blood Bromodichloromethane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVBZ | Blood Benzene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVBZN | Blood Benzonitrile (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVC6 | Blood Cyclohexane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVCB | Blood Chlorobenzene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVCF | Blood Chloroform (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVCM | Blood Dibromochloromethane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVCT | Blood Carbon Tetrachloride (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVDB | Blood 1,4-Dichlorobenzene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVDE | Blood 1,2-Dibromoethane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVDEE | Blood Diethyl Ether (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVEA | Blood Ethyl Acetate (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVEB | Blood Ethylbenzene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVEC | Blood Chloroethane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVFN | Blood Furan (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVIBN | Blood Isobutyronitrile (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVIPB | Blood Isopropylbenzene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVMC | Blood Methylene Chloride (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVMCP | Blood Methylcyclopentane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVME | Blood Methyl-tert-butyl ether (MTBE) (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVMIK | Blood Methyl Isobutyl Ketone (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVNB | Blood Nitrobenzene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVOX | Blood o-Xylene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVTC | Blood Trichloroethene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVTE | Blood 1,1,1-Trichloroethane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVTFT | Blood aaa-Trifluorotoluene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVTHF | Blood Tetrahydrofuran (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVTP | Blood 1,2,3-Trichloropropane (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVVB | Blood Vinyl Bromide (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| LBXVXY | Blood m-/p-Xylene (ng/mL) | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| WTSVOCPR | VOC Subsample Weight Pre-Pandemic | P_VOCWB | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_UM_R | Lead (Youth), Strontium, and Uranium - Urine | 2017 | 2020 | Laboratory | RDC Only |
| URDUPBLC | Urinary Lead Comment Code | P_UM_R | Lead (Youth), Strontium, and Uranium - Urine | 2017 | 2020 | Laboratory | RDC Only |
| URDUSRLC | USR Comment Code | P_UM_R | Lead (Youth), Strontium, and Uranium - Urine | 2017 | 2020 | Laboratory | RDC Only |
| URDUURLC | Urinary Uranium Comment Code | P_UM_R | Lead (Youth), Strontium, and Uranium - Urine | 2017 | 2020 | Laboratory | RDC Only |
| URXUPB | Lead, urine (ug/L) | P_UM_R | Lead (Youth), Strontium, and Uranium - Urine | 2017 | 2020 | Laboratory | RDC Only |
| URXUSR | Strontium, urine (ug/L) | P_UM_R | Lead (Youth), Strontium, and Uranium - Urine | 2017 | 2020 | Laboratory | RDC Only |
| URXUUR | Uranium, urine (ug/L) | P_UM_R | Lead (Youth), Strontium, and Uranium - Urine | 2017 | 2020 | Laboratory | RDC Only |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_UM_R | Lead (Youth), Strontium, and Uranium - Urine | 2017 | 2020 | Laboratory | RDC Only |
| LBDTFRSI | Transferrin receptor (nmol/L) | P_TFR | Transferrin Receptor | 2017 | 2020 | Laboratory | None |
| LBXTFR | Transferrin receptor (mg/L) | P_TFR | Transferrin Receptor | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_TFR | Transferrin Receptor | 2017 | 2020 | Laboratory | None |
| LBDCOTLC | Cotinine, Serum Comment Code | P_COT | Cotinine and Hydroxycotinine - Serum | 2017 | 2020 | Laboratory | None |
| LBDHCOLC | Hydroxycotinine, Serum Comment Code | P_COT | Cotinine and Hydroxycotinine - Serum | 2017 | 2020 | Laboratory | None |
| LBXCOT | Cotinine, Serum (ng/mL) | P_COT | Cotinine and Hydroxycotinine - Serum | 2017 | 2020 | Laboratory | None |
| LBXHCOT | Hydroxycotinine, Serum (ng/mL) | P_COT | Cotinine and Hydroxycotinine - Serum | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_COT | Cotinine and Hydroxycotinine - Serum | 2017 | 2020 | Laboratory | None |
| LBXHA | Hepatitis A antibody | P_HEPA | Hepatitis A | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_HEPA | Hepatitis A | 2017 | 2020 | Laboratory | None |
| LBXHBS | Hepatitis B Surface Antibody | P_HEPB_S | Hepatitis B Surface Antibody | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_HEPB_S | Hepatitis B Surface Antibody | 2017 | 2020 | Laboratory | None |
| LBDHCI | Hepatitis C Antibody (confirmed) | P_HEPC | Hepatitis C: RNA (HCV-RNA), Confirmed Antibody (INNO-LIA), & Genotype | 2017 | 2020 | Laboratory | None |
| LBXHCG | Hepatitis C Genotype | P_HEPC | Hepatitis C: RNA (HCV-RNA), Confirmed Antibody (INNO-LIA), & Genotype | 2017 | 2020 | Laboratory | None |
| LBXHCR | Hepatitis C RNA | P_HEPC | Hepatitis C: RNA (HCV-RNA), Confirmed Antibody (INNO-LIA), & Genotype | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_HEPC | Hepatitis C: RNA (HCV-RNA), Confirmed Antibody (INNO-LIA), & Genotype | 2017 | 2020 | Laboratory | None |
| LBDHEG | Hepatitis E IgG (anti-HEV) | P_HEPE | Hepatitis E: IgG & IgM Antibodies | 2017 | 2020 | Laboratory | None |
| LBDHEM | Hepatitis E IgM (anti-HEV) | P_HEPE | Hepatitis E: IgG & IgM Antibodies | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_HEPE | Hepatitis E: IgG & IgM Antibodies | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent Sequence Number | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URD2MHLC | 2-methylhippuric acid comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URD34MLC | 3-methylhippuric acid & 4-methylhippuric acid comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDAAMLC | N-acetyl-S-(2-carbamoylethyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDAMCLC | N-acetyl-S-(N-methylcarbamoyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDATCLC | 2-amnothiazolne-4-carbxylic acid comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDBMALC | N-acetyl-S-(benzyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDBPMLC | N-acetyl-S-(n-propyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDCEMLC | N-acetyl-S- (2-carboxyethyl)-L-cysteine comment code
| P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDCYALC | N-Acetyl-S-(1-cyano-2-hydroxyethyl)-L-cysteine (CYHA) comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDCYMLC | N-acetyl-S-(2-cyanoethyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDDHBLC | N-acetyl-S-(3,4-dihidroxybutyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDGAMLC | N-acetyl-S-(2-carbamoyl-2-hydroxyethyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDHEMLC | N-acetyl-S-(2-hydroxyethyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDHP2LC | N-acetyl-S- (2-hydroxypropyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDHPMLC | N-acetyl-S- (3-hydroxypropyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDMADLC | Mandelic acid comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDMB3LC | N-acetyl-S- (4-hydroxy-2-butenyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDPHGLC | Phenylglyoxylic acid comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDPM3LC | N-Acetyl-S-(4-hydroxy-2-methyl-2-buten-1-yl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDPMMLC | N-acetyl-S-(3-hydroxypropyl-1-methyl)-L-cysteine comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDTTCLC | 2-Thioxothiazolidine-4-carboxylic acid comment code | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URX2MH | 2-methylhippuric acid (ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URX34M | 3-methylhippuric acid & 4-methylhippuric acid(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXAAM | N-acetyl-S-(2-carbamoylethyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXAMC | N-acetyl-S-(N-methylcarbamoyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXATC | 2-aminothiazoline-4-carboxylic acid(ng/mL)
| P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXBMA | N-acetyl-S-(benzyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXBPM | N-acetyl-S-(n-propyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXCEM | N-acetyl-S-(2-carboxyethyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXCYHA | N-Acetyl-S-(1-cyano-2-hydroxyethyl)-L-cysteine (CYHA) (ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXCYM | N-acetyl-S-(2-cyanoethyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXDHB | N-acetyl-S-(3,4-dihidroxybutyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXGAM | N-acetyl-S-(2-carbamoyl-2-hydroxyethyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXHEM | N-acetyl-S-(2-hydroxyethyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXHP2 | N-acetyl-S- (2-hydroxypropyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXHPM | N-acetyl-S- (3-hydroxypropyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXIPM3 | N-Acetyl-S-(4-hydroxy-2-methyl-2-buten-1-yl)-L-cysteine (ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXMAD | Mandelic acid(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXMB3 | N-acetyl-S- (4-hydroxy-2-butenyl)-L-cysteine (ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXPHG | Phenylglyoxylic acid(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXPMM | N-acetyl-S-(3-hydroxypropyl-1-methyl)-L-cysteine(ng/mL) | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXTTC | 2-Thioxothiazolidine-4-carboxylic acid | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_UVOC | Volatile Organic Compound (VOC) Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| LBDHBG | Hepatitis B surface antigen | P_HEPBD | Hepatitis B: Core antibody, Surface antigen, and Hepatitis D antibody | 2017 | 2020 | Laboratory | None |
| LBDHD | Hepatitis D antibody (anti-HDV) | P_HEPBD | Hepatitis B: Core antibody, Surface antigen, and Hepatitis D antibody | 2017 | 2020 | Laboratory | None |
| LBXHBC | Hepatitis B core antibody | P_HEPBD | Hepatitis B: Core antibody, Surface antigen, and Hepatitis D antibody | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_HEPBD | Hepatitis B: Core antibody, Surface antigen, and Hepatitis D antibody | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_UVOC2 | Volatile Organic Compound (VOC) Metabolites II - Urine | 2017 | 2020 | Laboratory | None |
| URDMUCLC | trans, trans-Muconic acid comment code | P_UVOC2 | Volatile Organic Compound (VOC) Metabolites II - Urine | 2017 | 2020 | Laboratory | None |
| URDPMALC | Phenylmercapturic acid comment code | P_UVOC2 | Volatile Organic Compound (VOC) Metabolites II - Urine | 2017 | 2020 | Laboratory | None |
| URXMUCA | trans, trans-Muconic acid (ng/mL) | P_UVOC2 | Volatile Organic Compound (VOC) Metabolites II - Urine | 2017 | 2020 | Laboratory | None |
| URXPHMA | Phenylmercapturic acid (ng/mL) | P_UVOC2 | Volatile Organic Compound (VOC) Metabolites II - Urine | 2017 | 2020 | Laboratory | None |
| WTVOC2PP | UVOC2 Special Subsample Weights Pre-Pandemic | P_UVOC2 | Volatile Organic Compound (VOC) Metabolites II - Urine | 2017 | 2020 | Laboratory | None |
| LBDEOALC | Ethylene Oxide comment code | P_ETHOX | Ethylene Oxide | 2017 | 2020 | Laboratory | None |
| LBXEOA | Ethylene Oxide (pmol/g Hb) | P_ETHOX | Ethylene Oxide | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number | P_ETHOX | Ethylene Oxide | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights Pre-Pandemic | P_ETHOX | Ethylene Oxide | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URDBBALC | 2,3,4,5-tetrabromobenzoic Acid Comment Code | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URDBCPLC | Bis (1-chloro-2-propyl) Phosphate Comment Code | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URDBDCLC | Bis (1,3-dichloro-2-propyl) Phosphate Comment Code | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URDCEPLC | Bis-2-chloroethyl Phosphate Comt Code | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URDDPHLC | Diphenyl Phosphate Comment Code | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URDDUPLC | Dibutyl Phosphate Comment Code | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URXBCEP | Bis-2-chloroethyl Phosphate | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URXBCPP | Bis (1-chloro-2-propyl) Phosphate | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URXBDCP | Bis (1,3-dichloro-2-propyl) Phosphate | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URXDBUP | Dibutyl Phosphate | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URXDPHP | Diphenyl Phosphate | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| URXTBBA | 2,3,4,5-tetrabromobenzoic Acid | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| WTSBPRP | Subsample B Weights Pre-Pandemic | P_FR | Flame Retardants - Urine | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDOP1LC | Dimethylphosphate Comment Code | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDOP2LC | Diethylphosphate Comment Code | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDOP3LC | Dimethylthiophosphate Comment Code | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDOP4LC | Diethylthiophosphate Comment Code | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDOP5LC | Dimethyldithiophosphate Comment Code | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URDOP6LC | Diethyldithiophosphate Comment Code | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXOP1 | Dimethylphosphate (ng/mL) | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXOP2 | Diethylphosphate (ng/mL) | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXOP3 | Dimethylthiophosphate (ng/mL) | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXOP4 | Diethylthiophosphate (ng/mL) | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXOP5 | Dimethyldithiophosphate (ng/mL) | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| URXOP6 | Diethyldithiophosphate (ng/mL) | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| WTSBPRP | Subsample B Weights Pre-Pandemic | P_OPD | Organophosphate Insecticides - Dialkyl Phosphate Metabolites - Urine | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_SSFR | Flame Retardants - Urine (Surplus) | 2017 | 2020 | Laboratory | None |
| SSBPPP | 4-((tert-butyl)phenyl)phenyl phosphate (µg/L) | P_SSFR | Flame Retardants - Urine (Surplus) | 2017 | 2020 | Laboratory | None |
| SSBPPPL | 4-((tert-butyl)phenyl)phenyl phosphate (µg/L) comment code | P_SSFR | Flame Retardants - Urine (Surplus) | 2017 | 2020 | Laboratory | None |
| SSIPPP | 2-((isopropyl)phenyl)phenyl phosphate (µg/L) | P_SSFR | Flame Retardants - Urine (Surplus) | 2017 | 2020 | Laboratory | None |
| SSIPPPL | 2-((isopropyl)phenyl)phenyl phosphate (µg/L) comment code | P_SSFR | Flame Retardants - Urine (Surplus) | 2017 | 2020 | Laboratory | None |
| WTSSBPP | Surplus specimen B weights pre-pandemic | P_SSFR | Flame Retardants - Urine (Surplus) | 2017 | 2020 | Laboratory | None |
| SEQN | Respondent sequence number. | P_PERNT | Perchlorate, Nitrate & Thiocyanate - Urine | 2017 | 2020 | Laboratory | None |
| URDNO3LC | Nitrate, urine Comment Code | P_PERNT | Perchlorate, Nitrate & Thiocyanate - Urine | 2017 | 2020 | Laboratory | None |
| URDSCNLC | Thiocyanate, urine Comment Code | P_PERNT | Perchlorate, Nitrate & Thiocyanate - Urine | 2017 | 2020 | Laboratory | None |
| URDUP8LC | Perchlorate, urine Comment Code | P_PERNT | Perchlorate, Nitrate & Thiocyanate - Urine | 2017 | 2020 | Laboratory | None |
| URXNO3 | Nitrate, urine (ng/mL) | P_PERNT | Perchlorate, Nitrate & Thiocyanate - Urine | 2017 | 2020 | Laboratory | None |
| URXSCN | Thiocyanate, urine (ng/mL) | P_PERNT | Perchlorate, Nitrate & Thiocyanate - Urine | 2017 | 2020 | Laboratory | None |
| URXUP8 | Perchlorate, urine (ng/mL) | P_PERNT | Perchlorate, Nitrate & Thiocyanate - Urine | 2017 | 2020 | Laboratory | None |
| WTSAPRP | Subsample A Weights | P_PERNT | Perchlorate, Nitrate & Thiocyanate - Urine | 2017 | 2020 | Laboratory | None |