| SEQN | Respondent sequence number. | UCPREG_L | Urine Pregnancy Test | 2021 | 2023 | Laboratory | None |
| URXPREG | Urine Pregnancy Result | UCPREG_L | Urine Pregnancy Test | 2021 | 2023 | Laboratory | None |
| LBXAGP | alpha-1-acid glycoprotein (g/L) | AGP_L | alpha-1-Acid Glycoprotein | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | AGP_L | alpha-1-Acid Glycoprotein | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | AGP_L | alpha-1-Acid Glycoprotein | 2021 | 2023 | Laboratory | None |
| LBDFERSI | Ferritin(µg/L) | FERTIN_L | Ferritin | 2021 | 2023 | Laboratory | None |
| LBXFER | Ferritin(ng/mL) | FERTIN_L | Ferritin | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | FERTIN_L | Ferritin | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | FERTIN_L | Ferritin | 2021 | 2023 | Laboratory | None |
| LBDTFRSI | Transferrin receptor (nmol/L) | TFR_L | Transferrin Receptor | 2021 | 2023 | Laboratory | None |
| LBXTFR | Transferrin receptor (mg/L) | TFR_L | Transferrin Receptor | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | TFR_L | Transferrin Receptor | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 MEC Weight | TFR_L | Transferrin Receptor | 2021 | 2023 | Laboratory | None |
| LBDBANO | Basophils number (1000 cells/uL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBDEONO | Eosinophils number (1000 cells/uL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBDLYMNO | Lymphocyte number (1000 cells/uL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBDMONO | Monocyte number (1000 cells/uL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBDNENO | Segmented neutrophils number (1000 cell/uL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXBAPCT | Basophils percent (%) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXEOPCT | Eosinophils percent (%) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXHCT | Hematocrit (%) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXHGB | Hemoglobin (g/dL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXLYPCT | Lymphocyte percent (%) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXMC | Mean cell hemoglobin concentration (g/dL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXMCHSI | Mean cell hemoglobin (pg) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXMCVSI | Mean cell volume (fL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXMOPCT | Monocyte percent (%) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXMPSI | Mean platelet volume (fL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXNEPCT | Segmented neutrophils percent (%) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXNRBC | Nucleated red blood cells (/100 WBC) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXPLTSI | Platelet count (1000 cells/uL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXRBCSI | Red blood cell count (million cells/uL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXRDW | Red cell distribution width (%) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBXWBCSI | White blood cell count (1000 cells/uL) | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | CBC_L | Complete Blood Count with 5-Part Differential in Whole Blood | 2021 | 2023 | Laboratory | None |
| LBDRFO | RBC folate (ng/mL) | FOLATE_L | Folate - RBC | 2021 | 2023 | Laboratory | None |
| LBDRFOSI | RBC folate (nmol/L) | FOLATE_L | Folate - RBC | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number | FOLATE_L | Folate - RBC | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | FOLATE_L | Folate - RBC | 2021 | 2023 | Laboratory | None |
| LBD17HLC | 17α-hydroxyprogesterone Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBD17HSI | 17α-hydroxyprogesterone (nmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDAMHLC | Anti-Mullerian hormone Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDAMHSI | Anti-Mullerian hormone (pmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDANDLC | Androstenedione Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDANDSI | Androstenedione (nmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDDHELC | Dehydroepiandrosterone sulfate Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDDHESI | Dehydroepiandrosterone sulfate (µmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDES1LC | Estrone Sulfate Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDES1SI | Estrone Sulfate (pmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDESOLC | Estrone Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDESOSI | Estrone (pmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDESTLC | Estradiol Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDESTSI | Estradiol (pmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDFSHLC | Follicle Stimulating Hormone Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDLUHLC | Luteinizing Hormone Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDPG4LC | Progesterone Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDPG4SI | Progesterone (nmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDSHGLC | Sex Hormone Binding Globulin Comment Code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDTSTLC | Testosterone comment code | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDTSTSI | Testosterone, total (nmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBX17H | 17α-hydroxyprogesterone (ng/dL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXAMH | Anti-Mullerian hormone (ng/mL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXAND | Androstenedione (ng/dL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXDHE | Dehydroepiandrosterone sulfate (µg/dL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXES1 | Estrone Sulfate (pg/mL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXESO | Estrone (ng/dL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXEST | Estradiol (pg/mL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXFSH | Follicle Stimulating Hormone (mIU/mL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXLUH | Luteinizing Hormone (mIU/mL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXPG4 | Progesterone (ng/dL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXSHBG | Sex Hormone Binding Globulin (SHBG, nmol/L) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBXTST | Testosterone, total (ng/dL) | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | TST_L | Sex Steroid Hormone Panel - Serum | 2021 | 2023 | Laboratory | None |
| LBDINLC | Insulin Comment Code | INS_L | Insulin | 2021 | 2023 | Laboratory | None |
| LBDINSI | Insulin (pmol/L) | INS_L | Insulin | 2021 | 2023 | Laboratory | None |
| LBXIN | Insulin (uU/mL) | INS_L | Insulin | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | INS_L | Insulin | 2021 | 2023 | Laboratory | None |
| WTSAF2YR | Fasting Subsample 2 Year MEC Weight | INS_L | Insulin | 2021 | 2023 | Laboratory | None |
| LBDGLUSI | Fasting Glucose (mmol/L) | GLU_L | Plasma Fasting Glucose | 2021 | 2023 | Laboratory | None |
| LBXGLU | Fasting Glucose (mg/dL) | GLU_L | Plasma Fasting Glucose | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number | GLU_L | Plasma Fasting Glucose | 2021 | 2023 | Laboratory | None |
| WTSAF2YR | Fasting Subsample 2 Year MEC Weight | GLU_L | Plasma Fasting Glucose | 2021 | 2023 | Laboratory | None |
| PHAALCHR | The time (in hours) the examinee last drank alcohol suchs as beer, wine, or liquor. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHAALCMN | The time (in minutes) the examinee last drank alcohol such as beer, wine, or liquor. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHAANTHR | The time (in hours) the examinee last had antacids, laxatives or anti-diarrheals. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHAANTMN | The time (in minutes) the examinee last had antacids, laxatives or anti-diarrheals. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHACOFHR | The time (in hours) since the examinee last drank coffee or tea with cream or sugar. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHACOFMN | The time (in minutes) since the examinee last drank coffee or tea with cream or sugar. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | 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. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | 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. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHAGUMHR | The time (in hours) the examinee last had gum, breath mints, lozenges or cough drops, or other cough or cold remedies. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHAGUMMN | The time (in minutes) the examinee last had gum, breath mints, lozenges or cough drops, or other cough or cold remedies. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHASUPHR | The time (in hours) the examinee last had dietary supplements such as vitamins and minerals. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHASUPMN | The time (in minutes) the examinee last had dietary supplements such as vitamins and minerals. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHDSESNZ | Session in which SP was examined | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHQ020 | Coffee or tea with cream or sugar? [Include milk or non-dairy creamers.] | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHQ030 | Alcohol, such as beer, wine, or liquor? | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHQ040 | Gum, breath mints, lozenges or cough drops, or other cough or cold remedies? | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHQ050 | Antacids, laxatives, or anti-diarrheals? | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| PHQ060 | Dietary supplements such as vitamins and minerals? [Include multivitamins and single nutrient supplements.] | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | FASTQX_L | Fasting Questionnaire | 2021 | 2023 | Laboratory | None |
| LBXGH | Glycohemoglobin (%) | GHB_L | Glycohemoglobin | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | GHB_L | Glycohemoglobin | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | GHB_L | Glycohemoglobin | 2021 | 2023 | Laboratory | None |
| LBDFOT | Serum total folate (ng/mL) | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBDFOTSI | Serum total folate (nmol/L) | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBDSF1LC | 5-Methyl-tetrahydrofolic comment code | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBDSF2LC | Folic acid comment code | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBDSF3LC | 5-Formyl-tetrahydrofolate comment code | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBDSF4LC | Tetrahydrofolate comment code | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBDSF5LC | 5,10-Methenyl-tetrahydrofolate comment code | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBDSF6LC | Mefox oxidation product comment code | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBXSF1SI | 5-Methyl-tetrahydrofolate (nmol/L) | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBXSF2SI | Folic acid (nmol/L) | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBXSF3SI | 5-Formyl-tetrahydrofolate (nmol/L) | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBXSF4SI | Tetrahydrofolate (nmol/L) | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBXSF5SI | 5,10-Methenyl-tetrahydrofolate (nmol/L) | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBXSF6SI | Mefox oxidation product (nmol/L) | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number | FOLFMS_L | Serum Folate Forms - Total & Individual - Serum | 2021 | 2023 | Laboratory | None |
| LBDVD2LC | 25-hydroxyvitamin D2 comment code | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| LBDVD3LC | 25-hydroxyvitamin D3 comment code | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| LBDVE3LC | epi-25-hydroxyvitamin D3 comment code | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| LBDVIDLC | 25-hydroxyvitamin D2 + D3 comment code | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| LBXVD2MS | 25-hydroxyvitamin D2 (nmol/L) | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| LBXVD3MS | 25-hydroxyvitamin D3 (nmol/L) | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| LBXVE3MS | epi-25-hydroxyvitamin D3 (nmol/L) | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| LBXVIDMS | 25-hydroxyvitamin D2 + D3 | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | VID_L | Vitamin D | 2021 | 2023 | Laboratory | None |
| LBDBCDLC | Blood cadmium comment code | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDBCDSI | Blood cadmium (nmol/L) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDBMNLC | Blood manganese comment code | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDBMNSI | Blood manganese (nmol/L) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDBPBLC | Blood lead comment code | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDBPBSI | Blood lead (umol/L) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDBSELC | Blood selenium comment code | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDBSESI | Blood selenium (umol/L) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDTHGLC | Blood mercury, total comment code | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDTHGSI | Blood mercury, total (nmol/L) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBXBCD | Blood cadmium (ug/L) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBXBMN | Blood manganese (ug/L) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBXBPB | Blood lead (ug/dL) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBXBSE | Blood selenium(ug/L) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBXTHG | Blood mercury, total (ug/L) | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | PBCD_L | Lead, Cadmium, Total Mercury, Selenium, & Manganese – Blood | 2021 | 2023 | Laboratory | None |
| LBDBGELC | Mercury, ethyl comment code | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| LBDBGESI | Mercury, ethyl (nmol/L) | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| LBDBGMLC | Mercury, methyl comment code | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| LBDBGMSI | Mercury, methyl (nmol/L) | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| LBDIHGLC | Mercury, inorganic comment code | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| LBDIHGSI | Mercury, inorganic (nmol/L) | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| LBXBGE | Mercury, ethyl (ug/L) | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| LBXBGM | Mercury, methyl (ug/L) | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| LBXIHG | Inorganic mercury, blood (ug/L) | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | IHGEM_L | Mercury: Inorganic, Ethyl, and Methyl - Blood | 2021 | 2023 | Laboratory | None |
| LBXHA | Hepatitis A antibody | HEPA_L | Hepatitis A | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number | HEPA_L | Hepatitis A | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | HEPA_L | Hepatitis A | 2021 | 2023 | Laboratory | None |
| LBXHBS | Hepatitis B Surface Antibody | HEPB_S_L | Hepatitis B Surface Antibody | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number | HEPB_S_L | Hepatitis B Surface Antibody | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | HEPB_S_L | Hepatitis B Surface Antibody | 2021 | 2023 | Laboratory | None |
| LBDHRPLC | High-Sensitivity C-Reactive Protein (hs-CRP) Comment Code | HSCRP_L | High-Sensitivity C-Reactive Protein | 2021 | 2023 | Laboratory | None |
| LBXHSCRP | High-Sensitivity C-Reactive Protein (hs-CRP) (mg/L) | HSCRP_L | High-Sensitivity C-Reactive Protein | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent Sequence Number | HSCRP_L | High-Sensitivity C-Reactive Protein | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | HSCRP_L | High-Sensitivity C-Reactive Protein | 2021 | 2023 | Laboratory | None |
| LBDHDD | Direct HDL-Cholesterol (mg/dL) | HDL_L | Cholesterol – High-Density Lipoprotein | 2021 | 2023 | Laboratory | None |
| LBDHDDSI | Direct HDL-Cholesterol (mmol/L) | HDL_L | Cholesterol – High-Density Lipoprotein | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent Sequence Number | HDL_L | Cholesterol – High-Density Lipoprotein | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | HDL_L | Cholesterol – High-Density Lipoprotein | 2021 | 2023 | Laboratory | None |
| LBDTCSI | Total Cholesterol (mmol/L) | TCHOL_L | Cholesterol - Total | 2021 | 2023 | Laboratory | None |
| LBXTC | Total Cholesterol (mg/dL) | TCHOL_L | Cholesterol - Total | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent Sequence Number | TCHOL_L | Cholesterol - Total | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | TCHOL_L | Cholesterol - Total | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | ALB_CR_L | Albumin & Creatinine - Urine | 2021 | 2023 | Laboratory | None |
| URDACT | Albumin creatinine ratio (mg/g) | ALB_CR_L | Albumin & Creatinine - Urine | 2021 | 2023 | Laboratory | None |
| URDUCRLC | Creatinine, urine comment code | ALB_CR_L | Albumin & Creatinine - Urine | 2021 | 2023 | Laboratory | None |
| URDUMALC | Albumin, urine comment code | ALB_CR_L | Albumin & Creatinine - Urine | 2021 | 2023 | Laboratory | None |
| URXCRS | Creatinine, urine (umol/L) | ALB_CR_L | Albumin & Creatinine - Urine | 2021 | 2023 | Laboratory | None |
| URXUCR | Creatinine, urine (mg/dL) | ALB_CR_L | Albumin & Creatinine - Urine | 2021 | 2023 | Laboratory | None |
| URXUMA | Albumin, urine (ug/mL) | ALB_CR_L | Albumin & Creatinine - Urine | 2021 | 2023 | Laboratory | None |
| URXUMS | Albumin, urine (mg/L) | ALB_CR_L | Albumin & Creatinine - Urine | 2021 | 2023 | Laboratory | None |
| LBDP1ALC | Arachidic acid (C20:0) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDP1ELC | 11-Eicosenoic acid (C20:1n-9) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDP1GLC | Tetracosanoic acid (C24:0) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPANLC | alpha-Linolenic acid (C18:3n-3) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPD3LC | Docosapentaenoic acid 3 (C22:5n-3) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPD6LC | Docosapentaenoic acid (C22:5n-6) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPDALC | Docosanoic acid (C22:0) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPEDLC | 11,14-Eicosadienoic acid (C20:2n6) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPGHLC | homo-gamma-Linolenic acd (C20:3n-6) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPHALC | Docosahexaenoic acid (C22:6n-3) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPLGLC | gamma-Linolenic acid (C18:3n6) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPMRLC | Myristic acid (C14:0) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPNLLC | Linoleic acid (C18:2n-6) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPNRLC | 15-Tetracosenoic acid (C24:1n9) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPOLLC | Oleic acid (C18:1n-9) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPPELC | Eicosapentaenoic acid (C20:5n-3) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPPLLC | Palmitoleic acid (16:1n-7) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPPMLC | Palmitic acid (C16:0) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPRALC | Arachidonic acid (C20:4n-6) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPSTLC | Stearic acid (C18:0) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDPTALC | Docosatetraenoic acid (C22:4n-6) comment code | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXP1A | Arachidic acid (C20:0) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXP1E | 11-Eicosenoic acid (C20:1n-9) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXP1G | Tetracosanoic acid (C24:0) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPAN | alpha-Linolenic acid (C18:3n-3) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPD3 | Docosapentaenoic acid 3 (C22:5n-3) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPD6 | Docosapentaenoic acid (C22:5n-6) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPDA | Docosanoic acid (C22:0) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPED | 11,14-Eicosadienoic acid (C20:2n6) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPGH | homo-gamma-Linolenic acid(C20:3n-6) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPHA | Docosahexaenoic acid (C22:6n-3) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPLG | gamma-Linolenic acid (C18:3n-6) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPMR | Myristic acid (C14:0) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPNL | Linoleic acid (C18:2n-6) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPNR | 15-Tetracosenoic acid (C24:1n9) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPOL | Oleic acid (C18:1n-9) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPPE | Eicosapentaenoic acid (C20:5n-3) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPPL | Palmitoleic acid (16:1n-7) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPPM | Palmitic acid (C16:0) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPRA | Arachidonic acid (C20:4n-6) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPST | Stearic acid (C18:0) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXPTA | Docosatetraenoic acid (C22:4n-6) (%) | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | FAR_L | Fatty Acids - Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDRF1LC | 5-Methyl-tetrahydrofolate, RBC comment code | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDRF2LC | Folic acid, RBC comment code | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDRF3LC | 5-Formyl-tetrahydrofolate, RBC comment code | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDRF4LC | Tetrahydrofolate, RBC comment code | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDRF5LC | 5,10-Methenyl-tetrahydrofolate, RBC comment code | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDRF6LC | MeFox oxidation product, RBC comment code | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDRF7SI | Total folate, washed Red Blood Cells (nmol/L) | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXRF1SI | 5-Methyl-tetrahydrofolate, RBC (nmol/L) | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXRF2SI | Folic acid, RBC (nmol/L) | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXRF3SI | 5-Formyl-tetrahydrofolate, RBC (nmol/L) | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXRF4SI | Tetrahydrofolate, RBC (nmol/L) | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXRF5SI | 5,10-Methenyl-tetrahydrofolate, RBC (nmol/L) | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBXRF6SI | MeFox oxidation product, RBC (nmol/L) | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | FFMR_L | Folate Forms - Total & Individual – Washed RBCs | 2021 | 2023 | Laboratory | None |
| LBDSALSI | Albumin, refrigerated serum(g/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSBUSI | Blood Urea Nitrogen (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSCASI | Total Calcium (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSCHSI | Total Cholesterol, refrigerated serum (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSCRSI | Creatinine, refrigerated serum (umol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSGBSI | Globulin (g/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSGLSI | Glucose, refrigerated serum (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSGTLC | Gamma Glutamyl Transferase (GGT) Comment Code | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSIRSI | Iron, refrigerated serum (umol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSPHSI | Phosphorus (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSTBLC | Total Bilirubin Comment Code | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSTBSI | Total Bilirubin (umol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSTPSI | Total Protein (g/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSTRSI | Triglycerides, refrigerated serum (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBDSUASI | Uric acid (umol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXMAGN | Magnesium (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSAL | Albumin, refrigerated serum (g/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSAPSI | Alkaline Phosphatase (ALP) (IU/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSASSI | Aspartate Aminotransferase (AST) (IU/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSATSI | Alanine Aminotransferase (ALT) (IU/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSBU | Blood Urea Nitrogen (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSC3SI | Bicarbonate (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSCA | Total Calcium (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSCH | Total Cholesterol, refrigerated serum (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSCK | Creatine Phosphokinase (CPK) (U/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSCLSI | Chloride (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSCR | Creatinine, refrigerated serum (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSGB | Globulin (g/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSGL | Glucose, refrigerated serum (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSGTSI | Gamma Glutamyl Transferase (GGT) (IU/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSIR | Iron, refrigerated serum (µg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSKSI | Potassium (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSLDSI | Lactate Dehydrogenase (LDH) (U/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSNASI | Sodium (mmol/L) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSOSSI | Osmolality (mmol/Kg) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSPH | Phosphorus (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSTB | Total Bilirubin (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSTP | Total Protein (g/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSTR | Triglycerides, refrigerated serum (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBXSUA | Uric acid (mg/dL) | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent Sequence Number | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | BIOPRO_L | Standard Biochemistry Profile | 2021 | 2023 | Laboratory | None |
| LBD2DFLC | Blood 2,5-Dimethylfuran Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDV06LC | Blood Hexane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDV07LC | Blood Heptane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDV08LC | Blood Octane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDV1DLC | Blood 1,2-Dichlorobenzene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDV2ALC | Blood 1,2-Dichloroethane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDV3BLC | Blood 1,3-Dichlorobenzene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDV4CLC | Blood Tetrachloroethene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVAPLC | Blood a-pinene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVBFLC | Blood Bromoform Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVBMLC | Blood Bromodichloromethane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVBZLC | Blood Benzene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVC6LC | Blood Cyclohexane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVCBLC | Blood Chlorobenzene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVCFLC | Blood Chloroform Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVCMLC | Blood Dibromochloromethane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVCTLC | Blood Carbon Tetrachloride Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVDBLC | Blood 1,4-Dichlorobenzene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVEALC | Blood Ethyl Acetate Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVEBLC | Blood Ethylbenzene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVECLC | Blood Chloroethane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVEELC | Blood Diethyl Ether Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVFNLC | Blood Furan Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVHTLC | Blood Tetrahydrofuran Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVIBLC | Blood Isobutyronitrile Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVIPLC | Blood Isopropylbenzene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVMCLC | Blood Methylene Chloride Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVMELC | Blood Methyl-tert-butyl ether (MTBE) Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVMKLC | Blood Methyl Isobutyl Ketone Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVMPLC | Blood Methylcyclopentane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVOXLC | Blood o-Xylene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVSTLC | Blood Styrene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVTCLC | Blood Trichloroethene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVTELC | Blood 1,1,1-Trichloroethane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVTOLC | Blood Toluene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVTPLC | Blood 1,2,3-Trichloropropane Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVXYLC | Blood m-/p-Xylene Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBDVZBLC | Blood Benzonitrile Comment Code | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBX2DF | Blood 2,5-Dimethylfuran (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXV06 | Blood Hexane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXV07N | Blood Heptane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXV08N | Blood Octane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXV1D | Blood 1,2-Dichlorobenzene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXV2A | Blood 1,2-Dichloroethane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXV3B | Blood 1,3-Dichlorobenzene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXV4C | Blood Tetrachloroethene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVAPN | Blood a-pinene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVBF | Blood Bromoform (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVBM | Blood Bromodichloromethane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVBZ | Blood Benzene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVBZN | Blood Benzonitrile (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVC6 | Blood Cyclohexane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVCB | Blood Chlorobenzene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVCF | Blood Chloroform (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVCM | Blood Dibromochloromethane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVCT | Blood Carbon Tetrachloride (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVDB | Blood 1,4-Dichlorobenzene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVDEE | Blood Diethyl Ether (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVEA | Blood Ethyl Acetate (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVEB | Blood Ethylbenzene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVEC | Blood Chloroethane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVFN | Blood Furan (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVIBN | Blood Isobutyronitrile (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVIPB | Blood Isopropylbenzene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVMC | Blood Methylene Chloride (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVMCP | Blood Methylcyclopentane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVME | Blood Methyl-tert-butyl ether (MTBE) (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVMIK | Blood Methyl Isobutyl Ketone (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVOX | Blood o-Xylene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVST | Blood Styrene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVTC | Blood Trichloroethene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVTE | Blood 1,1,1-Trichloroethane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVTHF | Blood Tetrahydrofuran (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVTO | Blood Toluene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVTP | Blood 1,2,3-Trichloropropane (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| LBXVXY | Blood m-/p-Xylene (ng/mL) | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | Laboratory | None |
| WTSVOC2Y | VOC Subsample Weight | VOCWB_L | Volatile Organic Compounds and Trihalomethanes/MTBE - Blood | 2021 | 2023 | 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 HDL_J | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | 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 HDL_J | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | 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 HDL_J | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | Laboratory | None |
| LBDLDLSI | LDL-Cholesterol, Friedewald equation (mmol/L) | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | Laboratory | None |
| LBDLDMSI | LDL-Cholesterol, Martin-Hopkins equation (mmol/L) | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | Laboratory | None |
| LBDLDNSI | LDL-Cholesterol, NIH equation 2 (mmol/L) | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | Laboratory | None |
| LBDTRSI | Triglyceride (mmol/L) | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | Laboratory | None |
| LBXTLG | Triglyceride (mg/dL) | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | Laboratory | None |
| WTSAF2YR | Fasting Subsample 2 Year MEC Weight | TRIGLY_L | Cholesterol - Low-Density Lipoproteins (LDL) & Triglycerides | 2021 | 2023 | Laboratory | None |
| LBDHBG | Hepatitis B surface antigen | HEPBD_L | Hepatitis B: Core antibody, Surface antigen, and Hepatitis D: antibody | 2021 | 2023 | Laboratory | None |
| LBDHD | Hepatitis D antibody (anti-HDV) | HEPBD_L | Hepatitis B: Core antibody, Surface antigen, and Hepatitis D: antibody | 2021 | 2023 | Laboratory | None |
| LBXHBC | Hepatitis B core antibody | HEPBD_L | Hepatitis B: Core antibody, Surface antigen, and Hepatitis D: antibody | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number | HEPBD_L | Hepatitis B: Core antibody, Surface antigen, and Hepatitis D: antibody | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | HEPBD_L | Hepatitis B: Core antibody, Surface antigen, and Hepatitis D: antibody | 2021 | 2023 | Laboratory | None |
| LBDHCI | Hepatitis C Antibody (confirmed) | HEPC_L | Hepatitis C: RNA (HCV-RNA), Confirmed Antibody (INNO-LIA), & Genotype | 2021 | 2023 | Laboratory | None |
| LBXHCG | Hepatitis C Genotype | HEPC_L | Hepatitis C: RNA (HCV-RNA), Confirmed Antibody (INNO-LIA), & Genotype | 2021 | 2023 | Laboratory | None |
| LBXHCR | Hepatitis C RNA | HEPC_L | Hepatitis C: RNA (HCV-RNA), Confirmed Antibody (INNO-LIA), & Genotype | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number. | HEPC_L | Hepatitis C: RNA (HCV-RNA), Confirmed Antibody (INNO-LIA), & Genotype | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | HEPC_L | Hepatitis C: RNA (HCV-RNA), Confirmed Antibody (INNO-LIA), & Genotype | 2021 | 2023 | Laboratory | None |
| LBDHEG | Hepatitis E IgG (anti-HEV) | HEPE_L | Hepatitis E: IgG & IgM Antibodies | 2021 | 2023 | Laboratory | None |
| LBDHEM | Hepatitis E IgM (anti-HEV) | HEPE_L | Hepatitis E: IgG & IgM Antibodies | 2021 | 2023 | Laboratory | None |
| SEQN | Respondent sequence number | HEPE_L | Hepatitis E: IgG & IgM Antibodies | 2021 | 2023 | Laboratory | None |
| WTPH2YR | Phlebotomy 2 Year Weight | HEPE_L | Hepatitis E: IgG & IgM Antibodies | 2021 | 2023 | Laboratory | None |