Table of Contents

Locator Record

Title: Dioxins, Furans, and Coplanar PCBs (L28DFP_C )
Contact Number: 1-866-441-NCHS
Years of Content: 2003 - 2004
First Published: April, 2008
Revised: NA
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Polychlorinated Dibenzo-p-dioxins (PCDDs), Dibenzofurans (PCDFs), and Non-ortho Substituted or Coplanar Polychorinated Biphenyls (cPCBs)
Record Source: NHANES 2003 - 2004
Survey Methodology: NHANES 2003 - 2004 is a stratified multistage probability sample of the civilian non-institutionalized population of the U.S.
Medium: NHANES Web site; SAS transport files

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 12C12 and 13C12 ions 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 Act 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

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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
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 Skip to Item
0 detectable result 691 691
1 below detectable limit 1185 1876
. Missing 409 2285