National Health and Nutrition Examination Survey

2003-2004 Data Documentation, Codebook, and Frequencies

Dioxins, Furans, & Coplanar PCBs (L28DFP_C)

Data File: L28DFP_C.xpt

First Published: April 2008

Last Revised: NA

Component Description

Polychlorinated dibenzo-p-dioxins and dibenzofurans are two similar classes of chlorinated aromatic chemicals that are produced as contaminants or byproducts. They have no known commercial or natural use. Dioxins are produced primarily during the incineration or burning of waste; the bleaching processes used in pulp and paper mills; and the chemical syntheses of trichlorophenoxyacetic acid, hexachlorophene, vinyl chloride, trichlorophenol, and pentachlorophenol. Both the synthesis and heat-related degradation of polychlorinated biphenyls (PCBs) will produce dibenzofuran byproducts. The coplanar and mono-ortho-substituted PCBs are chlorinated aromatic hydrocarbon chemicals belonging to the general class of PCBs that were once synthesized for use as heat-exchanger, transformer, and hydraulic fluids, and also used as additives to paints, oils, window caulking, and floor tiles. Production of PCBs peaked in the early 1970s and was banned in the United States after 1979. Together with the polychlorinated dioxins and furans, these two special classes of PCBs are often referred to as “dioxin-like” chemicals because they act in the body through a similar mechanism.

In the environment, these dioxin-like chemicals are persistent and usually occur as a mixture of congeners (i.e., compounds that differ by the numbers and positions of chlorine atoms attached to the dibenzo-p-dioxin, dibenzofuran, or biphenyl structures). The general population is exposed to low levels of polychlorinated dibenzo-p-dioxins and dibenzofurans primarily through ingestion of high-fat foods such as dairy products, eggs, and animal fats, and some fish and wildlife.

Eligible Sample

Participants aged 12 years and older who met the subsample requirements.

Description of Laboratory Methodology

Seven polychlorinated dibenzo-p-dioxins (PCDDs), 10 dibenzofurans (PCDFs), 4 non-ortho substituted or coplanar polychlorinated biphenyls (cPCBs), are measured in serum by high-resolution gas chromatography/isotope-dilution high-resolution mass spectrometry (HRGC/ID-HRMS).

Serum specimens (5–10 mL) to be analyzed for PCDDs/PCDFs/cPCBs are spiked with ¹³C-labeled (¹³C₁₂) internal standards and the analytesof interest are isolated in hexane using a C18 solid phase extraction (SPE) procedure followed by a Power-Prep/6 (Fluid Management Systems) automated cleanup and enrichment procedure using multi-layered silica gel (acidic, basic, and neutral silica) and alumina columnscoupled to an AX-21 carbon column. PCDDs/PCDFs/cPCBs are isolated in the reverse direction from carbon with toluene. For PCDD/PCDD/cPCBs, each analytical run consists of eight unknown specimens, two method blanks, and two quality control samples. Following sample cleanup, excess solvent is evaporated to 350 μL using a TurboVap II (Caliper Life Sciences) and the remaining solvent is transferred to silanized auto sampler vials containing 1 μL of dodecane“keeper” and allowed to evaporate to “dryness”. Before quantification, each vial is reconstituted with 5 μL ¹³C₁₂-labeled external standard. Sample extracts are then analyzed for PCDDs/PCDFs/cPCBs by HRGC/ID-HRMS where 2μL are injected, using a GC Pal (Leap Technology) auto sampler, into an Agilent Technologies 6890 Gas Chromatograph operated in the splitless injection mode with a flow of 1 mL/minute helium through a DB-5ms capillary column (30 m × 0.25 mm × 0.25 μm film thickness) where analytes are separated prior to entering a Thermo Finnigan MAT95 XP (5 kV) magnetic sector mass spectrometer operated in EI mode at 40 eV, using selected ion monitoring (SIM) at 10,000 resolving power (10% valley).

Calibration of mass spectrometer response factor vs. concentration is performed using calibration standards containing known concentrations of each native (¹²C₁₂) compound and its corresponding ¹³C₁₂ internal standard. The concentration of each analyte is derived by interpolationfrom individual linear calibration curves and is adjusted for sample weight. The validity of all mass spectrometry data are evaluated using a variety of established criteria, such as signal-to-noise ratio ≥ 3 for the smallest native ion mass, instrument resolving power ≥ 10,000, chromatographic isomer specificity index with 95% limits, relative retention time ratio of native to isotopically labeled analyte within 3 parts per thousand compared to a standard, response ratios of the two ¹²C₁₂and ¹³C₁₂ions must be within ± 20 % of their theoretical values and analyte recovery≥10 % and ≤ 120%. In addition, the calculated mean and range of each analyte in the quality control sample must be within their respective confidence intervals. The method detection limit (MDL) for each analyte is calculated correcting for sample weight and recovery. The total lipid content of each specimen is estimated from its total cholesterol and triglycerides values using a “summation” method. Analytical results for PCDDs/PCDFs/cPCBs are reported on both a whole-weight [fg/g or parts-per-quadrillion (ppq)] and lipid-adjusted basis [pg/g or parts-per-trillion (ppt)]. International toxicity equivalents (I-TEQs) are also reported for PCDDs, PCDFs, cPCBs and other “dioxin-like” PCBs, based on the WHO-TEF system. Prior to reporting results, all quality control (QC) data undergo a final review by a Division of Laboratory Science quality control officer.

Laboratory Quality Assurance and Monitoring

Serum specimens are processed, stored, and shipped to the Division ofLaboratory Sciences, National Center for Environmental Health, Centers for Disease Control and Prevention for analysis.

Detailed specimen collection and processing instructions are discussed in the NHANES Laboratory/Medical Technologists Procedures Manual (LPM). Vials are stored under appropriate frozen (–20°C) conditions until they are shipped to National Center for Environmental Health for testing.

Mobile Examination Centers (MECs)

Laboratory team performance is monitored using several techniques. NCHS and contract consultants use a structured quality assurance evaluation during unscheduled visits to evaluate both the quality of the laboratory work and the quality-control procedures. Each laboratory staff person is observed for equipment operation, specimen collection and preparation; testing procedures and constructive feedback are given to each staff. Formal retraining sessions are conducted annually to ensure that required skill levels were maintained.

The NHANES QA/QC protocols meet the 1988 Clinical Laboratory Improvement Amendments mandates. Detailed QA/QC instructions are discussed in the NHANES LPM.

Analytical Laboratories

NHANES uses several methods to monitor the quality of the analyses performed by the laboratories. In the MEC, these methods include performing blind split samples collected on “dry run” sessions. In addition, contract laboratories randomly perform repeat testing on 2.0%of all specimens.

NCEH developed and distributed a quality control protocolfor all the laboratories which outlined the Westgard rules used when running NHANES specimens. Any problems encountered during shipping or receipt of specimens, instrument calibration, reagents, and any special considerations are submitted to NCHS and Westat. Summary statistics for each control pool, QC graphs, are reviewed by NCHS for trends or shifts in the data. The laboratories are required to explain any identifiedareas of concern.

All QC procedures recommended by the manufacturers were followed.Reported results for all assays meet the Division of Laboratory Sciences’ quality control and quality assurance performance criteria for accuracy and precision (similar to specifications outlined by Westgard(1981).

Analytic Notes

Measures of polychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), non-ortho substituted or coplanar polychlorinated biphenyls (cPCBs) are assessed in participants aged 12 years and older on a one-third subsample.

Use the special weights included in this data file when analyzing data. Read the “Special Sample Weights for this Dataset”information provided before beginning analysis.

Subsample weights

Measures ofpolychlorinated dibenzo-p-dioxins (PCDDs), dibenzofurans (PCDFs), non-ortho substituted or coplanar polychlorinated biphenyls (cPCBs) were measured in a one third subsample of persons 12 years and over. Special sample weights are required to analyze these data properly. Specific sample weights for this subsample are included in this data file and should be used when analyzing these data.

Variance estimation

The analysis of NHANES 2003-2004 laboratory data must be conducted with the key survey design and basic demographic variables. The NHANES 2003-2004 Demographic Data File contains demographic and sample design variables. The recommended procedure for variance estimation requires use of stratum and PSU variables (SDMVSTRA and SDMVPSU, respectively) in the demographic data file.

Links to NHANES Data Files

This laboratory data file can be linked to the other NHANES 2003-2004data files using the unique survey participant identifier SEQN.

Detection Limits

The detection limits were variable for all of the analytes except for PCB 052(LBX052), PCB099(LBX099), PCB138(LBX138), and PCB153(LBX153), . The variable named LBD___LC indicates whetherthe result was below the limit of detection. There are two values: “0” and “1”. “0” means that the result was at or above the limit of detection. “1” indicates that the result was below the limit of detection.

The other variable named LBX___ provides the analytic result for thatanalyte.

The detection limit divided by the square root of 2 is the value that is provided for results that are below the limit of detection.

Please refer to the Analytic Guidelines for further details on the use of sample weights and other analytic issues.

References

Akins J.R., Waldrep K., and Bernert J.T. Jr. The Estimation of Total Serum Lipids by a Completely Enzymatic 'Summation' Method. Clin. Chim. Acta. 184: 219-226 (1989).
Barr J.B., Maggio V.L., Barr D.B., Turner W.E., Sjodin A., Sandau C.D., Pirkle J.L., Needham L.L., and Patterson D.G. Jr. New High-Resolution Mass Spectrometric Approach for the Measurement of Polychlorinated Biphenyls and Organochlorine Pesticides in Human Serum. J. Chromatography B. 2003:794;137–148.
Burse V.B., Patterson D.G. Jr., Brock J.W., and Needham L.L. Selected Analytical Methods Used at the Centers for Disease Control and Prevention for Measuring Environmental Pollutants in Serum. Toxicology and Industrial Health 1996:12(3/4);481–498.
Keith H.K., Crummett W., Deegan J. Jr., et al. Principles of Environmental Analysis. Anal. Chem. 55: 2210-2218 (1983).
Keith L.H . Report Results Right, Part I. Chemtech June: 352-356 (1991).
Keith L.H . Report Results Right, Part II. Chemtech August: 486-489 (1991).
Lapeza C.R. Jr., Patterson D.G. Jr., Liddle J.A.. An Automated Apparatus for the Extraction andEnrichment of 2,3,7,8-TCDD in Human Adipose. Anal. Chem. 1986:58;713–716.
Patterson D.G. Jr., Alexander L.R., Turner W.E., Isaacs S.G., and Needham L.L. (1990). The Development and Application of a High Resolution Mass Spectrometry Method for Measuring Polychlorinated Dibenzo-p-dioxins and Dibenzofurans in Serum. Chapter 9 In: Instrumentation for Trace Organic Monitoring. Clement R.E., Sui K.M., and Hill H.H. Jr., eds, Lewis Publishers.
Patterson D.G. Jr., Fürst P., Henderson L.O., Isaacs S.G., Alexander L.R., Turner W.E., Needham L.L., and Hannon H. Partitioning of In Vivo Bound PCDDs/PCDFs among Various Compartments in Whole Blood. Chemosphere 1989:19/1-6;135–142.
Patterson D.G. Jr., Hampton L., Lapeza C.R. Jr., et al. High-Resolution Gas Chromatographic/High-Resolution Mass Spectrometric Analysis of Human Serum on a Whole-Weight and Lipid Basis for 2,3,7,8-TCDD. Anal. Chem. 1987:59;2000–2005.
Patterson D.G. Jr., Holler J.S., Belser W.T., Boozer E.L., Lapeza C.R. Jr., Needham L.L. Determination of 2,3,7,8-TCDD in Human Adipose Tissue on Whole Weight and Lipid Bases. Chemosphere 1987:16;935–936.
Patterson D.G. Jr., Holler J.S., Lapeza C.R., et al. High-Resolution Gas Chromatographic/High-Resolution Mass Spectroscopic Analysis of Human Adipose Tissue for 2,3,7,8-TCDD. Anal. Chem. 1986:58;705–713.
Patterson D.G. Jr., Isaacs S.G., Alexander L.R., Turner W.E., Hampton L., Bernert J.T., Needham L.L. (1990). Determination of Specific Polychlorinated Dibenzo-p-dioxins and Dibenzofurans . . . Volume 11 - Polychlorinated Dibenzo-p-dioxins, Dibenzofurans, and Biphenyls," C. Rappe and H.R. Buser, Eds., WHO, International Association for Research on Cancer, Lyon, France.
Patterson D.G. Jr., Turner W.E., Alexander L.R., Isaacs S.G., and Needham L.L. The Analytical Methodology and Method Performance for the Determination of 2,3,7,8-TCDD in Serum for the Vietnam Veteran Agent Orange Validation Study, The Ranch Hand Validation and Half-Life Studies, and SelectedNIOSH Workers Studies. Chemosphere 1989:18/1-6;875–882.
Phillips, D.L., Pirkle, J.L., Burse V.W., Bernert, J.T., Henderson, L.O., and Needham, L.L. Chlorinated Hydrocarbon Levels in Humans Serum: Effects of Fasting and Feeding.Arch. Environ. Contam. Toxicol. 18: 495-500 (1989).
Taylor J.K. Quality Assurance of Chemical Measurements. Anal. Chem. 53: 1588A-1592A, 1596A (1981).
Turner W., DiPietro E., Cash T.P., McClure P.C., Patterson, D.G Jr., and Shirkhan An Improved SPE Extraction and Automated Sample Cleanup Method for Serum PCDDs, PCDFs, and Coplanar PCBs. Organohalogen Compounds 1994:19;31–35.
Turner W., DiPietro E., Lapeza C., Green V., Gill J., Patterson, D.G. , Jr. A Fast Universal Automated Cleanup System for the Isotope-Dilution High-Resolution Mass Spectrometric Analysis of PCDDs, PCDFs, Coplanar PCBs, PCB Congeners, andPersistent Pesticides from the Same Serum Sample. Organohalogen Compounds 1997:31;26–31.
Van den Berg M, Birnbaum L, Bosveld ATC et al. Toxic Equivalency Factors (TEFs) for PCBs, PCDDs, and PCDFs for Humans and Wildlife. Environmental Health Perspectives 106: 775-792 (1998).

Codebook and Frequencies

SEQN - Respondent sequence number

Variable Name:: SEQN
SAS Label:: Respondent sequence number
English Text:: Respondent sequence number.
Target:: Both males and females 12 YEARS - 150 YEARS

WTSC2YR - Two-year MEC weights of subsample C

Variable Name:: WTSC2YR
SAS Label:: Two-year MEC weights of subsample C
English Text:: Two-year MEC weights of subsample C
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0 to 456851.11941	Range of Values	2285	2285
.	Missing	0	2285

LBX028 - PCB28 (ng/g)

Variable Name:: LBX028
SAS Label:: PCB28 (ng/g)
English Text:: PCB28 (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.0076 to 1.4459	Range of Values	1866	1866
.	Missing	419	2285

LBX028LA - PCB28 Lipid Adj (ng/g)

Variable Name:: LBX028LA
SAS Label:: PCB28 Lipid Adj (ng/g)
English Text:: PCB28 Lipid Adjusted (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.8 to 237	Range of Values	1866	1866
.	Missing	419	2285

LBD028LC - PCB28 Comment Code

Variable Name:: LBD028LC
SAS Label:: PCB28 Comment Code
English Text:: PCB28 Comment Code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1866	1866
1	below detectable limit	0	1866
.	Missing	419	2285

LBX066 - PCB66 (ng/g)

Variable Name:: LBX066
SAS Label:: PCB66 (ng/g)
English Text:: PCB66 (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.001 to 0.7217	Range of Values	1898	1898
.	Missing	387	2285

LBX066LA - PCB66 Lipid Adj (ng/g)

Variable Name:: LBX066LA
SAS Label:: PCB66 Lipid Adj (ng/g)
English Text:: PCB66 Lipid Adjusted (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.15 to 118	Range of Values	1898	1898
.	Missing	387	2285

LBD066LC - PCB66 Comment Code

Variable Name:: LBD066LC
SAS Label:: PCB66 Comment Code
English Text:: PCB66 Comment Code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1881	1881
1	below detectable limit	17	1898
.	Missing	387	2285

LBX074 - PCB74 (ng/g)

Variable Name:: LBX074
SAS Label:: PCB74 (ng/g)
English Text:: PCB74 (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.003 to 1.3697	Range of Values	1898	1898
.	Missing	387	2285

LBX074LA - PCB74 Lipid Adj (ng/g)

Variable Name:: LBX074LA
SAS Label:: PCB74 Lipid Adj (ng/g)
English Text:: PCB74 Lipid Adjusted (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.55 to 180	Range of Values	1898	1898
.	Missing	387	2285

LBD074LC - PCB74 Comment Code

Variable Name:: LBD074LC
SAS Label:: PCB74 Comment Code
English Text:: PCB74 Comment Code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1898	1898
1	below detectable limit	0	1898
.	Missing	387	2285

LBX105 - PCB105 (ng/g)

Variable Name:: LBX105
SAS Label:: PCB105 (ng/g)
English Text:: PCB105 (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.0004 to 0.5858	Range of Values	1879	1879
.	Missing	406	2285

LBX105LA - PCB105 Lipid Adj (ng/g)

Variable Name:: LBX105LA
SAS Label:: PCB105 Lipid Adj (ng/g)
English Text:: PCB105 Lipid Adjusted (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.04 to 76.82	Range of Values	1879	1879
.	Missing	406	2285

LBD105LC - PCB105 Comment Code

Variable Name:: LBD105LC
SAS Label:: PCB105 Comment Code
English Text:: PCB105 Comment Code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1830	1830
1	below detectable limit	49	1879
.	Missing	406	2285

LBX118 - PCB118 (ng/g)

Variable Name:: LBX118
SAS Label:: PCB118 (ng/g)
English Text:: PCB118 (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.0039 to 2.6984	Range of Values	1887	1887
.	Missing	398	2285

LBX118LA - PCB118 Lipid Adj (ng/g)

Variable Name:: LBX118LA
SAS Label:: PCB118 Lipid Adj (ng/g)
English Text:: PCB118 Lipid Adjusted (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.7 to 354	Range of Values	1887	1887
.	Missing	398	2285

LBD118LC - PCB118 Comment Code

Variable Name:: LBD118LC
SAS Label:: PCB118 Comment Code
English Text:: PCB118 Comment Code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1887	1887
1	below detectable limit	0	1887
.	Missing	398	2285

LBX156 - PCB156 (ng/g)

Variable Name:: LBX156
SAS Label:: PCB156 (ng/g)
English Text:: PCB156 (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.0004 to 2.421	Range of Values	1880	1880
.	Missing	405	2285

LBX156LA - PCB156 Lipid Adj (ng/g)

Variable Name:: LBX156LA
SAS Label:: PCB156 Lipid Adj (ng/g)
English Text:: PCB156 Lipid Adjusted (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.04 to 367	Range of Values	1880	1880
.	Missing	405	2285

LBD156LC - PCB156 Comment Code

Variable Name:: LBD156LC
SAS Label:: PCB156 Comment Code
English Text:: PCB156 Comment Code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1558	1558
1	below detectable limit	322	1880
.	Missing	405	2285

LBX157 - PCB157 (ng/g)

Variable Name:: LBX157
SAS Label:: PCB157 (ng/g)
English Text:: PCB157 (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.0004 to 0.5544	Range of Values	1858	1858
.	Missing	427	2285

LBX157LA - PCB157 Lipid Adj (ng/g)

Variable Name:: LBX157LA
SAS Label:: PCB157 Lipid Adj (ng/g)
English Text:: PCB157 Lipid Adjusted (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.04 to 84	Range of Values	1858	1858
.	Missing	427	2285

LBD157LC - PCB157 Comment Code

Variable Name:: LBD157LC
SAS Label:: PCB157 Comment Code
English Text:: PCB157 Comment Code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1177	1177
1	below detectable limit	681	1858
.	Missing	427	2285

LBX167 - PCB167 (ng/g)

Variable Name:: LBX167
SAS Label:: PCB167 (ng/g)
English Text:: PCB167 (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.0004 to 0.3363	Range of Values	1864	1864
.	Missing	421	2285

LBX167LA - PCB167 Lipid Adj (ng/g)

Variable Name:: LBX167LA
SAS Label:: PCB167 Lipid Adj (ng/g)
English Text:: PCB167 Lipid Adjusted (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.03 to 50.9	Range of Values	1864	1864
.	Missing	421	2285

LBD167LC - PCB167 Comment Code

Variable Name:: LBD167LC
SAS Label:: PCB167 Comment Code
English Text:: PCB167 Comment Code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1073	1073
1	below detectable limit	791	1864
.	Missing	421	2285

LBX189 - PCB189 (ng/g)

Variable Name:: LBX189
SAS Label:: PCB189 (ng/g)
English Text:: PCB189 (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.0004 to 0.0594	Range of Values	1817	1817
.	Missing	468	2285

LBX189LA - PCB189 Lipid Adj (ng/g)

Variable Name:: LBX189LA
SAS Label:: PCB189 Lipid Adj (ng/g)
English Text:: PCB189 Lipid Adjusted (ng/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.02 to 12	Range of Values	1817	1817
.	Missing	468	2285

LBD189LC - PCB189 Comment Code

Variable Name:: LBD189LC
SAS Label:: PCB189 Comment Code
English Text:: PCB189 Comment Code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	434	434
1	below detectable limit	1383	1817
.	Missing	468	2285

LBXD01 - 1,2,3,7,8-pncdd (fg/g)

Variable Name:: LBXD01
SAS Label:: 1,2,3,7,8-pncdd (fg/g)
English Text:: 1,2,3,7,8-Pentachlorodibenzo-p-dioxin (pncdd) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
2.76 to 212.2	Range of Values	1878	1878
.	Missing	407	2285

LBXD01LA - 1,2,3,7,8-pncdd Lipid Adj (pg/g)

Variable Name:: LBXD01LA
SAS Label:: 1,2,3,7,8-pncdd Lipid Adj (pg/g)
English Text:: 1,2,3,7,8-Pentachlorodibenzo-p-dioxin (pncdd) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.4 to 36.3	Range of Values	1878	1878
.	Missing	407	2285

LBDD01LC - 1,2,3,7,8-pncdd Comment Code

Variable Name:: LBDD01LC
SAS Label:: 1,2,3,7,8-pncdd Comment Code
English Text:: 1,2,3,7,8-Pentachlorodibenzo-p-dioxin (pncdd) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	995	995
1	below detectable limit	883	1878
.	Missing	407	2285

LBXD02 - 1,2,3,4,7,8-hxcdd (fg/g)

Variable Name:: LBXD02
SAS Label:: 1,2,3,4,7,8-hxcdd (fg/g)
English Text:: 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin (hxcdd)(fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
8.06 to 253.3	Range of Values	1861	1861
.	Missing	424	2285

LBXD02LA - 1,2,3,4,7,8-hxcdd Lipid Adj (pg/g)

Variable Name:: LBXD02LA
SAS Label:: 1,2,3,4,7,8-hxcdd Lipid Adj (pg/g)
English Text:: 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin (hxcdd) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1 to 33	Range of Values	1861	1861
.	Missing	424	2285

LBDD02LC - 1,2,3,4,7,8-hxcdd Comment Code

Variable Name:: LBDD02LC
SAS Label:: 1,2,3,4,7,8-hxcdd Comment Code
English Text:: 1,2,3,4,7,8-Hexachlorodibenzo-p-dioxin (hxcdd) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	459	459
1	below detectable limit	1402	1861
.	Missing	424	2285

LBXD03 - 1,2,3,6,7,8-hxcdd (fg/g)

Variable Name:: LBXD03
SAS Label:: 1,2,3,6,7,8-hxcdd (fg/g)
English Text:: 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin (hxcdd)(fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
8.34 to 1316.8	Range of Values	1871	1871
.	Missing	414	2285

LBXD03LA - 1,2,3,6,7,8-hxcdd Lipid Adj (pg/g)

Variable Name:: LBXD03LA
SAS Label:: 1,2,3,6,7,8-hxcdd Lipid Adj (pg/g)
English Text:: 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin (hxcdd) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1.1 to 206	Range of Values	1871	1871
.	Missing	414	2285

LBDD03LC - 1,2,3,6,7,8-hxcdd Comment Code

Variable Name:: LBDD03LC
SAS Label:: 1,2,3,6,7,8-hxcdd Comment Code
English Text:: 1,2,3,6,7,8-Hexachlorodibenzo-p-dioxin (hxcdd) specimen comment code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1507	1507
1	below detectable limit	364	1871
.	Missing	414	2285

LBXD04 - 1,2,3,7,8,9-hxcdd (fg/g)

Variable Name:: LBXD04
SAS Label:: 1,2,3,7,8,9-hxcdd (fg/g)
English Text:: 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin (hxcdd) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
8.06 to 209.5	Range of Values	1869	1869
.	Missing	416	2285

LBXD04LA - 1,2,3,7,8,9-hxcdd Lipid Adj (pg/g)

Variable Name:: LBXD04LA
SAS Label:: 1,2,3,7,8,9-hxcdd Lipid Adj (pg/g)
English Text:: 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin (hxcdd) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.7 to 33.7	Range of Values	1869	1869
.	Missing	416	2285

LBDD04LC - 1,2,3,7,8,9-hxcdd Comment Code

Variable Name:: LBDD04LC
SAS Label:: 1,2,3,7,8,9-hxcdd Comment Code
English Text:: 1,2,3,7,8,9-Hexachlorodibenzo-p-dioxin (hxcdd) specimen comment code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	511	511
1	below detectable limit	1358	1869
.	Missing	416	2285

LBXD05 - 1,2,3,4,6,7,8-hpcdd (fg/g)

Variable Name:: LBXD05
SAS Label:: 1,2,3,4,6,7,8-hpcdd (fg/g)
English Text:: 1,2,3,4,6,7,8-Heptachlororodibenzo-p-dioxin (hpcdd) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
9.33 to 2799.4	Range of Values	1874	1874
.	Missing	411	2285

LBXD05LA - 1,2,3,4,6,7,8-hpcdd Lipid Adj (pg/g)

Variable Name:: LBXD05LA
SAS Label:: 1,2,3,4,6,7,8-hpcdd Lipid Adj (pg/g)
English Text:: 1,2,3,4,6,7,8-Heptachlororodibenzo-p-dioxin (hpcdd) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1.3 to 456	Range of Values	1874	1874
.	Missing	411	2285

LBDD05LC - 1,2,3,4,6,7,8-hpcdd Comment Code

Variable Name:: LBDD05LC
SAS Label:: 1,2,3,4,6,7,8-hpcdd Comment Code
English Text:: 1,2,3,4,6,7,8-Heptachlororodibenzo-p-dioxin (hpcdd) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1820	1820
1	below detectable limit	54	1874
.	Missing	411	2285

LBXD07 - 1,2,3,4,6,7,8,9-ocdd (fg/g)

Variable Name:: LBXD07
SAS Label:: 1,2,3,4,6,7,8,9-ocdd (fg/g)
English Text:: 1,2,3,4,6,7,8,9-Octachlorodibenzo-p-dioxin (ocdd) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
162.35 to 21125.4	Range of Values	1851	1851
.	Missing	434	2285

LBXD07LA - 1,2,3,4,6,7,8,9-ocdd Lipid Adj (pg/g)

Variable Name:: LBXD07LA
SAS Label:: 1,2,3,4,6,7,8,9-ocdd Lipid Adj (pg/g)
English Text:: 1,2,3,4,6,7,8,9-Octachlorodibenzo-p-dioxin (ocdd) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
25.7 to 3280	Range of Values	1851	1851
.	Missing	434	2285

LBDD07LC - 1,2,3,4,6,7,8,9-ocdd Comment Code

Variable Name:: LBDD07LC
SAS Label:: 1,2,3,4,6,7,8,9-ocdd Comment Code
English Text:: 1,2,3,4,6,7,8,9-Octachlorodibenzo-p-dioxin (ocdd) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1562	1562
1	below detectable limit	289	1851
.	Missing	434	2285

LBXF01 - 2,3,7,8-tcdf (fg/g)

Variable Name:: LBXF01
SAS Label:: 2,3,7,8-tcdf (fg/g)
English Text:: 2,3,7,8,-Tetrachlorodibenzofuran (tcdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
5.52 to 184.1	Range of Values	1868	1868
.	Missing	417	2285

LBXF01LA - 2,3,7,8-tcdf Lipid Adj (pg/g)

Variable Name:: LBXF01LA
SAS Label:: 2,3,7,8-tcdf Lipid Adj (pg/g)
English Text:: 2,3,7,8,-Tetrachlorodibenzofuran (tcdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.4 to 12.3	Range of Values	1868	1868
.	Missing	417	2285

LBDF01LC - 2,3,7,8-tcdf Comment Code

Variable Name:: LBDF01LC
SAS Label:: 2,3,7,8-tcdf Comment Code
English Text:: 2,3,7,8,-Tetrachlorodibenzofuran (tcdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	55	55
1	below detectable limit	1813	1868
.	Missing	417	2285

LBXF02 - 1,2,3,7,8-pncdf (fg/g)

Variable Name:: LBXF02
SAS Label:: 1,2,3,7,8-pncdf (fg/g)
English Text:: 1,2,3,7,8-Pentachlorodibenzofuran (pncdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
5.37 to 132.7	Range of Values	1867	1867
.	Missing	418	2285

LBXF02LA - 1,2,3,7,8-pncdf Lipid Adj (pg/g)

Variable Name:: LBXF02LA
SAS Label:: 1,2,3,7,8-pncdf Lipid Adj (pg/g)
English Text:: 1,2,3,7,8-Pentachlorodibenzofuran (pncdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.5 to 19.6	Range of Values	1867	1867
.	Missing	418	2285

LBDF02LC - 1,2,3,7,8-pncdf Comment Code

Variable Name:: LBDF02LC
SAS Label:: 1,2,3,7,8-pncdf Comment Code
English Text:: 1,2,3,7,8-Pentachlorodibenzofuran (pncdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	31	31
1	below detectable limit	1836	1867
.	Missing	418	2285

LBXF03 - 2,3,4,7,8-pncdf (fg/g)

Variable Name:: LBXF03
SAS Label:: 2,3,4,7,8-pncdf (fg/g)
English Text:: 2,3,4,7,8-Pentachlorodibenzofuran (pncdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
5.37 to 442.5	Range of Values	1871	1871
.	Missing	414	2285

LBXF03LA - 2,3,4,7,8-pncdf Lipid Adj (pg/g)

Variable Name:: LBXF03LA
SAS Label:: 2,3,4,7,8-pncdf Lipid Adj (pg/g)
English Text:: 2,3,4,7,8-Pentachlorodibenzofuran (pncdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.7 to 65.4	Range of Values	1871	1871
.	Missing	414	2285

LBDF03LC - 2,3,4,7,8-pncdf Comment Code

Variable Name:: LBDF03LC
SAS Label:: 2,3,4,7,8-pncdf Comment Code
English Text:: 2,3,4,7,8-Pentachlorodibenzofuran (pncdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1212	1212
1	below detectable limit	659	1871
.	Missing	414	2285

LBXF04 - 1,2,3,4,7,8-hxcdf (fg/g)

Variable Name:: LBXF04
SAS Label:: 1,2,3,4,7,8-hxcdf (fg/g)
English Text:: 1,2,3,4,7,8-Hexachlorodibenzofuran (hxcdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
5.44 to 228.1	Range of Values	1866	1866
.	Missing	419	2285

LBXF04LA - 1,2,3,4,7,8-hxcdf Lipid Adj (pg/g)

Variable Name:: LBXF04LA
SAS Label:: 1,2,3,4,7,8-hxcdf Lipid Adj (pg/g)
English Text:: 1,2,3,4,7,8-Hexachlorodibenzofuran (hxcdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.6 to 32.1	Range of Values	1866	1866
.	Missing	419	2285

LBDF04LC - 1,2,3,4,7,8-hxcdf Comment Code

Variable Name:: LBDF04LC
SAS Label:: 1,2,3,4,7,8-hxcdf Comment Code
English Text:: 1,2,3,4,7,8-Hexachlorodibenzofuran (hxcdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1119	1119
1	below detectable limit	747	1866
.	Missing	419	2285

LBXF05 - 1,2,3,6,7,8-hxcdf (fg/g)

Variable Name:: LBXF05
SAS Label:: 1,2,3,6,7,8-hxcdf (fg/g)
English Text:: 1,2,3,6,7,8-Hexachlorodibenzofuran (hxcdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
5.44 to 242.8	Range of Values	1868	1868
.	Missing	417	2285

LBXF05LA - 1,2,3,6,7,8-hxcdf Lipid Adj (pg/g)

Variable Name:: LBXF05LA
SAS Label:: 1,2,3,6,7,8-hxcdf Lipid Adj (pg/g)
English Text:: 1,2,3,6,7,8-Hexachlorodibenzofuran (hxcdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.5 to 35.9	Range of Values	1868	1868
.	Missing	417	2285

LBDF05LC - 1,2,3,6,7,8-hxcdf Comment Code

Variable Name:: LBDF05LC
SAS Label:: 1,2,3,6,7,8-hxcdf Comment Code
English Text:: 1,2,3,6,7,8-Hexachlorodibenzofuran (hxcdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	915	915
1	below detectable limit	953	1868
.	Missing	417	2285

LBXF06 - 1,2,3,7,8,9-hxcdf (fg/g)

Variable Name:: LBXF06
SAS Label:: 1,2,3,7,8,9-hxcdf (fg/g)
English Text:: 1,2,3,7,8,9-Hexachlorodibenzofuran (hxcdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
5.37 to 162.7	Range of Values	1864	1864
.	Missing	421	2285

LBXF06LA - 1,2,3,7,8,9-hxcdf Lipid Adj (pg/g)

Variable Name:: LBXF06LA
SAS Label:: 1,2,3,7,8,9-hxcdf Lipid Adj (pg/g)
English Text:: 1,2,3,7,8,9-Hexachlorodibenzofuran (hxcdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.4 to 26.9	Range of Values	1864	1864
.	Missing	421	2285

LBDF06LC - 1,2,3,7,8,9-hxcdf Comment Code

Variable Name:: LBDF06LC
SAS Label:: 1,2,3,7,8,9-hxcdf Comment Code
English Text:: 1,2,3,7,8,9-Hexachlorodibenzofuran (hxcdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	5	5
1	below detectable limit	1859	1864
.	Missing	421	2285

LBXF07 - 2,3,4,6,7,8-hxcdf (fg/g)

Variable Name:: LBXF07
SAS Label:: 2,3,4,6,7,8-hxcdf (fg/g)
English Text:: 2,3,4,6,7,8-Hexchlorodibenzofuran (hxcdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
5.37 to 115.4	Range of Values	1866	1866
.	Missing	419	2285

LBXF07LA - 2,3,4,6,7,8-hxcdf Lipid Adj (pg/g)

Variable Name:: LBXF07LA
SAS Label:: 2,3,4,6,7,8-hxcdf Lipid Adj (pg/g)
English Text:: 2,3,4,6,7,8-Hexchlorodibenzofuran (hxcdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.5 to 11.6	Range of Values	1866	1866
.	Missing	419	2285

LBDF07LC - 2,3,4,6,7,8-hxcdf Comment Code

Variable Name:: LBDF07LC
SAS Label:: 2,3,4,6,7,8-hxcdf Comment Code
English Text:: 2,3,4,6,7,8-Hexchlorodibenzofuran (hxcdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	92	92
1	below detectable limit	1774	1866
.	Missing	419	2285

LBXF08 - 1,2,3,4,6,7,8-hpcdf (fg/g)

Variable Name:: LBXF08
SAS Label:: 1,2,3,4,6,7,8-hpcdf (fg/g)
English Text:: 1,2,3,4,6,7,8-Heptachlorodibenzofuran (hpcdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
6.29 to 2036.8	Range of Values	1858	1858
.	Missing	427	2285

LBXF08LA - 1,2,3,4,6,7,8-hpcdf Lipid Adj (pg/g)

Variable Name:: LBXF08LA
SAS Label:: 1,2,3,4,6,7,8-hpcdf Lipid Adj (pg/g)
English Text:: 1,2,3,4,6,7,8-Heptachlorodibenzofuran (hpcdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.8 to 367	Range of Values	1858	1858
.	Missing	427	2285

LBDF08LC - 1,2,3,4,6,7,8-hpcdf Comment Code

Variable Name:: LBDF08LC
SAS Label:: 1,2,3,4,6,7,8-hpcdf Comment Code
English Text:: 1,2,3,4,6,7,8-Heptachlorodibenzofuran (hpcdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1660	1660
1	below detectable limit	198	1858
.	Missing	427	2285

LBXF09 - 1,2,3,4,7,8,9-hpcdf (fg/g)

Variable Name:: LBXF09
SAS Label:: 1,2,3,4,7,8,9-hpcdf (fg/g)
English Text:: 1,2,3,4,7,8,9-Heptachlorodibenzofuran (Hpcdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
5.52 to 324.8	Range of Values	1852	1852
.	Missing	433	2285

LBXF09LA - 1,2,3,4,7,8,9-hpcdf Lipid Adj (pg/g)

Variable Name:: LBXF09LA
SAS Label:: 1,2,3,4,7,8,9-hpcdf Lipid Adj (pg/g)
English Text:: 1,2,3,4,7,8,9-Heptachlorodibenzofuran (Hpcdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.5 to 53.7	Range of Values	1852	1852
.	Missing	433	2285

LBDF09LC - 1,2,3,4,7,8,9-hpcdf Comment Code

Variable Name:: LBDF09LC
SAS Label:: 1,2,3,4,7,8,9-hpcdf Comment Code
English Text:: 1,2,3,4,7,8,9-Heptachlorodibenzofuran (Hpcdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	103	103
1	below detectable limit	1749	1852
.	Missing	433	2285

LBXF10 - 1,2,3,4,6,7,8,9-ocdf (fg/g)

Variable Name:: LBXF10
SAS Label:: 1,2,3,4,6,7,8,9-ocdf (fg/g)
English Text:: 1,2,3,4,6,7,8,9-Octachlorodibenzofuran (ocdf) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
5.52 to 1949	Range of Values	1849	1849
.	Missing	436	2285

LBXF10LA - 1,2,3,4,6,7,8,9-ocdf Lipid Adj (pg/g)

Variable Name:: LBXF10LA
SAS Label:: 1,2,3,4,6,7,8,9-ocdf Lipid Adj (pg/g)
English Text:: 1,2,3,4,6,7,8,9-Octachlorodibenzofuran (ocdf) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.6 to 434	Range of Values	1849	1849
.	Missing	436	2285

LBDF10LC - 1,2,3,4,6,7,8,9-ocdf Comment Code

Variable Name:: LBDF10LC
SAS Label:: 1,2,3,4,6,7,8,9-ocdf Comment Code
English Text:: 1,2,3,4,6,7,8,9-Octachlorodibenzofuran (ocdf) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	507	507
1	below detectable limit	1342	1849
.	Missing	436	2285

LBXPCB - 3,3',4,4',5-pncb (fg/g)

Variable Name:: LBXPCB
SAS Label:: 3,3',4,4',5-pncb (fg/g)
English Text:: 3,3',4,4',5-Pentachlorobiphenyl (pncb) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
11.67 to 3367.7	Range of Values	1860	1860
.	Missing	425	2285

LBXPCBLA - 3,3',4,4',5-pncb Lipid Adj (pg/g)

Variable Name:: LBXPCBLA
SAS Label:: 3,3',4,4',5-pncb Lipid Adj (pg/g)
English Text:: 3,3',4,4',5-Pentachlorobiphenyl (pncb) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1.9 to 721	Range of Values	1860	1860
.	Missing	425	2285

LBDPCBLC - 3,3',4,4',5-pncb Comment Code

Variable Name:: LBDPCBLC
SAS Label:: 3,3',4,4',5-pncb Comment Code
English Text:: 3,3',4,4',5-Pentachlorobiphenyl (pncb) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1730	1730
1	below detectable limit	130	1860
.	Missing	425	2285

LBXTC2 - 3,4,4',5-tcb (fg/g)

Variable Name:: LBXTC2
SAS Label:: 3,4,4',5-tcb (fg/g)
English Text:: 3,4,4',5-Tetrachlorobiphenyl (tcb) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
11.88 to 4366.8	Range of Values	1860	1860
.	Missing	425	2285

LBXTC2LA - 3,4,4',5-tcb Lipid Adj (pg/g)

Variable Name:: LBXTC2LA
SAS Label:: 3,4,4',5-tcb Lipid Adj (pg/g)
English Text:: 3,4,4',5-Tetrachlorobiphenyl (tcb) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1.3 to 717	Range of Values	1860	1860
.	Missing	425	2285

LBDTC2LC - 3,4,4',5-tcb Comment Code

Variable Name:: LBDTC2LC
SAS Label:: 3,4,4',5-tcb Comment Code
English Text:: 3,4,4',5-Tetrachlorobiphenyl (tcb) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	685	685
1	below detectable limit	1175	1860
.	Missing	425	2285

LBXHXC - 3,3',4,4',5,5'-hxcb (fg/g)

Variable Name:: LBXHXC
SAS Label:: 3,3',4,4',5,5'-hxcb (fg/g)
English Text:: 3,3',4,4',5,5'-hexachlorobiphenyl (hxcb) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
10.96 to 1296.2	Range of Values	1866	1866
.	Missing	419	2285

LBXHXCLA - 3,3',4,4',5,5'-hxcb Lipid Adj (pg/g)

Variable Name:: LBXHXCLA
SAS Label:: 3,3',4,4',5,5'-hxcb Lipid Adj (pg/g)
English Text:: 3,3',4,4',5,5'-hexachlorobiphenyl (hxcb) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
1.4 to 196	Range of Values	1866	1866
.	Missing	419	2285

LBDHXCLC - 3,3',4,4',5,5'-hxcb Comment Code

Variable Name:: LBDHXCLC
SAS Label:: 3,3',4,4',5,5'-hxcb Comment Code
English Text:: 3,3',4,4',5,5'-hexachlorobiphenyl (hxcb) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	1077	1077
1	below detectable limit	789	1866
.	Missing	419	2285

LBXTCD - 2,3,7,8-tcdd (fg/g)

Variable Name:: LBXTCD
SAS Label:: 2,3,7,8-tcdd (fg/g)
English Text:: 2,3,7,8-Tetrachlorodienzo-p-dioxin (tcdd) (fg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
2.76 to 235.8	Range of Values	1876	1876
.	Missing	409	2285

LBXTCDLA - 2,3,7,8-tcdd Lipid Adj (pg/g)

Variable Name:: LBXTCDLA
SAS Label:: 2,3,7,8-tcdd Lipid Adj (pg/g)
English Text:: 2,3,7,8-Tetrachlorodienzo-p-dioxin (tcdd) Lipid Adjusted (pg/g)
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative	Skip to Item
0.3 to 28.6	Range of Values	1876	1876
.	Missing	409	2285

LBDTCDLC - 2,3,7,8-tcdd Comment Code

Variable Name:: LBDTCDLC
SAS Label:: 2,3,7,8-tcdd Comment Code
English Text:: 2,3,7,8-Tetrachlorodienzo-p-dioxin (tcdd) specimen code
Target:: Both males and females 12 YEARS - 150 YEARS

Code or Value	Value Description	Count	Cumulative
0	detectable result	691	691
1	below detectable limit	1185	1876
.	Missing	409	2285

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