Table of Contents

Locator Record

Title: Urinary Current Use Pesticides (formerly priority pesticides, non-persistent pesticide metabolites) (L26UPP_C )
Contact Number: 1-866-441-NCHS
Years of Content: 2003 - 2004
First Published: December, 2009
Revised: August, 2011
Access Constraints: None
Use Constraints: None
Geographic Coverage: National
Subject:Urinary Current Use Pesticides (formerly priority pesticides, non-persistent pesticides metabolites)
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

Sulfonylurea herbicides are a group of non-selective herbicides that act by disrupting plant protein synthesis. They have been introduced relatively recently and are widely used, but application rates are relatively low. Potential sources for human exposure include foods grown in treated soil or contaminated water. Urinary measurement of sulfonylurea herbicides can be used to assess human exposure.

Also included are urinary measurements of several organophosphorus pesticides (acephate, methamidophos, dimethoate and its metabolite, omethoate), carbamate pesticide metabolites (carbofuranphenol, isopropoxyphenol), fungicide metabolites (ethylene thiourea, propylene thiourea), herbicides (2,4-dichlorophenoxyacetic acid, 2,4,5-trichorophenoxyacetic acid), and pentachlorophenol. These are a diverse group of chemicals that may have residential and/or agricultural uses, although methamidophos is no longer registered for use in the United States, and carbofuran has restricted use on limited agricultural crops. Human exposure to pesticides may occur through consumption of contaminated food or water, contact with treated surfaces or the pesticide itself, and from inhaling pesticide vapor or fumes. 
 

Acephate (URXAPE), Ethylenethio Urea (URXETU), Methamidaphos (URXMMI), Dimethoate (URXMTO), O-Methoate (URXOMO), and Propylenethio Urea (URXPTU)

Acephate (APE), methamidophos (MMI), O-methoate (OMO), and dimethoate (MTO), are organophosphorus (OP) pesticides. OP pesticides are the most commonly used insecticides in agriculture and the domestic field.

The most widely used fungicides in agriculture are the alkali and metal salts of the alkelenebis-(dithiocarbamate) acids. Ethylenethio urea (ETU) represents the main degradation product of the ethylene bisdithiocarbamates and propylenethio urea (PTU) is the main degradation product of the propylene bisdithiocarbamates. They are foliar applied compounds that control many fungal diseases including early and late blights, leaf spots, rust mildew and scabs in various field crops such as fruits, nuts, cucurbits, vegetables, grapes, and ornamentals.

Bensulfuron methyl (URXBSM), Chlorsulfuron (URXCHS), Ethametsulfuron methyl (URXEMM), Foramsulfuron (URXFRM), Halosulfuron (URXHLS), Mesosulfuron methyl (URXMSM), Metsulfuron methyl (URXMTM), Nicosulfuron (URXNOS), Oxasulfuron (URXOXS), Primisulfuron methyl (URXPIM), Prosulfuron (URXPRO), Rimsulfuron (URXRIM), Sulfometuron methyl (URXSMM), Sulfosulfuron (URXSSF), Thifensulfuron methyl (URXTHF), Triasulfuron (URXTRA), Triflusulfuron methyl (URXTRN)

 Because of their increasing use in agricultural applications, a method to measure both occupational and incidental human exposures to Sulfonylurea herbicides was developed.

Carbofuranphenol (URXCBF), Pentachlorophenol (URXPCP), and 2-isopropoxyphenol (URXPPX)

Altogether, these target compounds represent some of the most used pesticides in the United States and give a general, though not total, evaluation of a person’s pesticide exposure.

2,4-D (URX24D), 2,4,5-Trichlorophenoxyacetic acid (URX25T)

In 1999, an estimated 415,000 tons of conventional pesticides were applied in the United States.  The most commonly used pesticide for home and garden was the herbicide 2, 4-D with an estimated use of 3000-4000 tons in those applications, giving an average domestic use per capita of ~ 15g /year.  During the same year, the most abundantly applied pesticide in U. S. agriculture was atrazine, with application of 35,000 tons.  The widespread use of pesticides and the scientific interest in potential adverse health effect of pesticides exposure have increased the demand for fast and robust analytical methods for measuring markers of possible pesticides.

This method assesses human exposure to select pesticide metabolites of non-persistent pesticides.  It does not directly test for any disease.  This method includes specific organophosphorous insecticide metabolites (5-chloro-1-isopropyl-[3H]-1, 2, 4-triazol-3-one; 2-diethylamino-6-methyl pyrimidin-4-ol; 2-isopropyl-6-methyl-4-pyrimidiol; 3-chloro-4-methyl-hydroxycoumarin; 2-[(dimethoxy-phosphorothioyl) sulfanyl] succinic acid; 3, 5, 6-tricholor-2-pyridinol; 4-nitrophenol, synthetic pyrethroids (3-[(1Z)-2-carboxyprop-1-en-1-yl]-2,2-dimethylcyclopropanecarboxylic acid; 3-phenoxybenzoic acid; 4-fluoro-3-phenoxybenzoic acid; cis-3-(2,2-dichlorovinyl)-2,2-dimethyl-cyclopropane-1-carboxylic acid; trans-3-(2,2-dichlorovinyl) -2,2-dimethyl-cyclopropane-1-carboxylic acid; trans - 3 -(2,2 dibromovinyl) -2,2-dimethyl cyclo propane-1-carboxylic acid), herbicides (acetochlor mercapturate; alachlor mercapturate; atrazine mercapturate; metolachlor mercapturate; 2,4-dichloro-phenoxyacetic acid; 2,4,5-trichlorophenoxyacetic acid), and an insect repellant N, N-diethyl-m-toluamide (DEET).

 

Eligible Sample

Participants aged 6 years and older who met the subsample requirements.

 

Description of Laboratory Methodology

Acephate (URXAPE), Ethylenethio Urea (URXETU), Methamidaphos(URXMMI), Dimethoate (URXMTO), O-Methoate (URXOMO), and Propylenethio Urea (URXPTU)

The general sample preparation included lyophilization of the urine samples followed by extraction with dichloromethane. The analytical separation was performed by high-performance liquid chromatography (HPLC), and detection by a triple quadrupole mass spectrometer with and APCI source in positive ion mode using multiple reactions monitoring (MRM) and tandem mass spectrometry (MS/MS) analysis. Two different Thermo-Finnigan triple quadrupole mass spectrometers, a TSQ 7000 and a TSQ Quantum Ultra, were used. 

Bensulfuron methyl (URXBSM), Chlorsulfuron (URXCHS), Ethametsulfuron methyl (URXEMM), Foramsulfuron (URXFRM), Halosulfuron (URXHLS), Mesosulfuron methyl (URXMSM), Metsulfuron methyl (URXMTM), Nicosulfuron (URXNOS), Oxasulfuron (URXOXS), Primisulfuron methyl (URXPIM), Prosulfuron (URXPRO), Rimsulfuron (URXRIM), Sulfometuron methyl (URXSMM), Sulfosulfuron (URXSSF), Thifensulfuron methyl (URXTHF), Triasulfuron (URXTRA), Triflusulfuron methyl (URXTRN)

A method for measuring 17 sulfonylurea (SU) herbicides in human urine was developed. Urine samples were extracted using solid phase extraction (SPE), pre-concentrated, and analyzed by high-performance liquid chromatography–tandem mass spectrometry using turbo-ionspray atmospheric pressure ionization. Carbon 13-labeled ethametsulfuron methyl was used as an internal standard. Chromatographic retention times were under 7 minutes. Total throughput was estimated as >100 samples per day. The limits of detection (LOD) ranged from 0.05 µg/L to 0.10 µg/L with an average LOD of 0.06 µg/L. Average total relative standard deviations were 17%, 12% and 8% at 0.1 µg/L, 3.0 µg/L and 10 µg/L, respectively. Average extraction efficiencies of the SPE cartridges were 87% and 86% at 2.5 µg/L and 25 µg/L, respectively. Chemical degradation in acetonitrile and urine was monitored over 250 days. Estimated days for 10% and 50% degradation in urine and acetonitrile ranged from 0.7 days to >318 days.

Carbofuranphenol (URXCBF), Pentachlorophenol (URXPCP), and 2-isopropoxyphenol (URXPPX)

A method to measure 12 urinary phenolic metabolites of pesticides or related chemicals has developed. The target chemicals for our method are 2-isopropoxyphenol; 2,4-dichlorophenol; 2,5-dichlorophenol; carbofuranphenol; 2,4,5-trichlorophenol; 2,4,6-trichlorophenol; 3,5,6-trichloro-2-pyridinol; para-nitrophenol, ortho-phenylphenol, pentachlorophenol, 1-naphthol and 2-naphthol. The sample preparation involves enzyme hydrolysis, isolation of the target chemicals using solid phase extraction cartridges, a phase-transfer catalyzed derivatization, cleanup using sorbent-immobilized liquid /liquid extraction cartridges, and concentration of the sample. Derivatized samples are analyzed by capillary gas chromatography-tandem mass spectroscopy using isotope dilution calibration for quantification. The limits of detection are in the mid ng/L range and the average coefficient of variation was below 15% for most of the analytes. Using our method, we measured concentrations of the target chemicals in urine samples from the general population.

2,4-D (URX24D), 2,4,5-Trichlorophenoxyacetic acid (URX25T)

The analytes are extracted and concentrated from the urine matrix using solid phase extraction cartridges, separated through high pressure liquid chromatography, and analyzed on a triple quadrupole mass spectrometer.

Laboratory Quality Assurance and Monitoring

Urine specimens are processed, stored, and shipped to the Division of Laboratory 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 protocol for 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 identified areas 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

The list of chemicals in the following table have been withdrawn from the 2003-2004 Urinary Current Use Pesticide file (L26UPP_C) due to unacceptable measurement variance at or near the limit of detection.

Chemical name
Atrazine mercapturate
Atrazine
Desethyl atrazine mercapturate
Diaminochloroatrazine
Desethyl atrazine
Desisopropyl atrazine
Acetochlor mercapture
Alachlor mercapturate
cis-dibromovinyl-dimethyl cyclopropane carboxylic acid
cis-dichlorovinyl-dimethylcyclopropane carboxylic acid
Chloro-dihydro-isopropyl-triazol/one
cis-dimethylvinyl-dimethylcyclo-propane carboxylic acid
Chloro-hydroxy-methyl-chromen-ol/one
DEET
Diethylaminomethylpyrimidine-ol/one
Fluoro-phenoxybenzoic acid
Malathion diacid
Metolachlor mercapturate
3-phenoxybenzoic acid
Paranitrophenol
trans-dichlorovinyl-dimethylcylopropane carboxylic acid

Subsample weights
Measures of urinary diakyl phosphate metabolites were measured in a one third subsample of persons 6 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 2003-2004 data files using the unique survey participant identifier SEQN.

Detection Limits
Two variables are provided for each of these analytes. The variable named URD___LC indicates whether the 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 URX___ provides the analytic result for that analyte.

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 6 YEARS - 150 YEARS

WTSC2YR - Environmental C 2 year weights

Variable Name:
WTSC2YR
SAS Label:
Environmental C 2 year weights
English Text:
Environmental C 2 year weights
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 to 456851.11941 Range of Values 2612 2612
. Missing 0 2612

URX24D - 2,4-D (ug/L)

Variable Name:
URX24D
SAS Label:
2,4-D (ug/L)
English Text:
2,4-D result (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.07 to 43.08 Range of Values 2488 2488
. Missing 124 2612

URD24DLC - 2,4-D comment code

Variable Name:
URD24DLC
SAS Label:
2,4-D comment code
English Text:
2,4-D comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 1645 1645
1 Below lower detection limit 843 2488
. Missing 124 2612

URX25T - 2,4,5 Trichlorophenoxyacetic acid (ug/L)

Variable Name:
URX25T
SAS Label:
2,4,5 Trichlorophenoxyacetic acid (ug/L)
English Text:
2,4,5 Trichlorophenoxyacetic acid (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.07 to 42.47 Range of Values 2416 2416
. Missing 196 2612

URD25TLC - 2,4,5 Trichlorophenoxyacetic acid code

Variable Name:
URD25TLC
SAS Label:
2,4,5 Trichlorophenoxyacetic acid code
English Text:
2,4,5 Trichlorophenoxyacetic acid code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 208 208
1 Below lower detection limit 2208 2416
. Missing 196 2612

URXAPE - Acephate (ug/L)

Variable Name:
URXAPE
SAS Label:
Acephate (ug/L)
English Text:
Acephate (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.07 to 8.57 Range of Values 2491 2491
. Missing 121 2612

URDAPELC - Acephate comment code

Variable Name:
URDAPELC
SAS Label:
Acephate comment code
English Text:
Acephate comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 48 48
1 Below lower detection limit 2443 2491
. Missing 121 2612

URXBSM - Bensulfuron methyl (ug/L)

Variable Name:
URXBSM
SAS Label:
Bensulfuron methyl (ug/L)
English Text:
Bensulfuron methyl (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.035 to 0.035 Range of Values 2355 2355
. Missing 257 2612

URDBSMLC - Bensulfuron methyl comment code

Variable Name:
URDBSMLC
SAS Label:
Bensulfuron methyl comment code
English Text:
Bensulfuron methyl comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2355 2355
. Missing 257 2612

URXCBF - Carbofuranphenol (ug/L)

Variable Name:
URXCBF
SAS Label:
Carbofuranphenol (ug/L)
English Text:
Carbofuranphenol (ug/L) result
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.28 to 29.83 Range of Values 2390 2390
. Missing 222 2612

URDCBFLC - Carbofuranphenol comment code

Variable Name:
URDCBFLC
SAS Label:
Carbofuranphenol comment code
English Text:
Carbofuranphenol comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 11 11
1 Below lower detection limit 2379 2390
. Missing 222 2612

URXCHS - Chlorsulfuron (ug/L)

Variable Name:
URXCHS
SAS Label:
Chlorsulfuron (ug/L)
English Text:
Chlorsulfuron (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.035 to 0.035 Range of Values 2100 2100
. Missing 512 2612

URDCHSLC - Chlorsulfuron comment code

Variable Name:
URDCHSLC
SAS Label:
Chlorsulfuron comment code
English Text:
Chlorsulfuron comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2100 2100
. Missing 512 2612

URXEMM - Ethametsulfuron methyl (ug/L)

Variable Name:
URXEMM
SAS Label:
Ethametsulfuron methyl (ug/L)
English Text:
Ethametsulfuron methyl (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.071 to 0.77 Range of Values 2321 2321
. Missing 291 2612

URDEMMLC - Ethametsulfuron methyl comment code

Variable Name:
URDEMMLC
SAS Label:
Ethametsulfuron methyl comment code
English Text:
Ethametsulfuron methyl comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 3 3
1 Below lower detection limit 2318 2321
. Missing 291 2612

URXETU - Ethylenethio urea (ug/L)

Variable Name:
URXETU
SAS Label:
Ethylenethio urea (ug/L)
English Text:
Ethylenethio urea (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.07 to 20.69 Range of Values 2169 2169
. Missing 443 2612

URDETULC - Ethylenethio urea comment code

Variable Name:
URDETULC
SAS Label:
Ethylenethio urea comment code
English Text:
Ethylenethio urea comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 108 108
1 Below lower detection limit 2061 2169
. Missing 443 2612

URXFRM - Foramsulfuron (ug/L)

Variable Name:
URXFRM
SAS Label:
Foramsulfuron (ug/L)
English Text:
Foramsulfuron (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.042 to 0.042 Range of Values 2255 2255
. Missing 357 2612

URDFRMLC - Foramsulfuron comment code

Variable Name:
URDFRMLC
SAS Label:
Foramsulfuron comment code
English Text:
Foramsulfuron comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2255 2255
. Missing 357 2612

URXHLS - Halosulfuron (ug/L)

Variable Name:
URXHLS
SAS Label:
Halosulfuron (ug/L)
English Text:
Halosulfuron (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.049 to 0.049 Range of Values 2356 2356
. Missing 256 2612

URDHLSLC - Halosulfuron comment code

Variable Name:
URDHLSLC
SAS Label:
Halosulfuron comment code
English Text:
Halosulfuron comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2356 2356
. Missing 256 2612

URXMMI - Methamidaphos (ug/L)

Variable Name:
URXMMI
SAS Label:
Methamidaphos (ug/L)
English Text:
Methamidaphos (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.07 to 0.77 Range of Values 2379 2379
. Missing 233 2612

URDMMILC - Methamidaphos comment code

Variable Name:
URDMMILC
SAS Label:
Methamidaphos comment code
English Text:
Methamidaphos comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 8 8
1 Below lower detection limit 2371 2379
. Missing 233 2612

URXMSM - Mesosulfuron methyl (ug/L)

Variable Name:
URXMSM
SAS Label:
Mesosulfuron methyl (ug/L)
English Text:
Mesosulfuron methyl (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.035 to 0.035 Range of Values 2427 2427
. Missing 185 2612

URDMSMLC - Mesosulfuron methyl comment code

Variable Name:
URDMSMLC
SAS Label:
Mesosulfuron methyl comment code
English Text:
Mesosulfuron methyl comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2427 2427
. Missing 185 2612

URXMTM - Metsulfuron methyl (ug/L)

Variable Name:
URXMTM
SAS Label:
Metsulfuron methyl (ug/L)
English Text:
Metsulfuron methyl (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.035 to 0.07 Range of Values 2360 2360
. Missing 252 2612

URDMTMLC - Metsulfuron methyl comment code

Variable Name:
URDMTMLC
SAS Label:
Metsulfuron methyl comment code
English Text:
Metsulfuron methyl comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 2 2
1 Below lower detection limit 2358 2360
. Missing 252 2612

URXMTO - Dimethoate (ug/L)

Variable Name:
URXMTO
SAS Label:
Dimethoate (ug/L)
English Text:
Dimethoate (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.07 to 2.98 Range of Values 2455 2455
. Missing 157 2612

URDMTOLC - Dimethoate comment code

Variable Name:
URDMTOLC
SAS Label:
Dimethoate comment code
English Text:
Dimethoate comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 18 18
1 Below lower detection limit 2437 2455
. Missing 157 2612

URXNOS - Nicosulfuron (ug/L)

Variable Name:
URXNOS
SAS Label:
Nicosulfuron (ug/L)
English Text:
Nicosulfuron (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.071 to 0.27 Range of Values 2322 2322
. Missing 290 2612

URDNOSLC - Nicosulfuron comment code

Variable Name:
URDNOSLC
SAS Label:
Nicosulfuron comment code
English Text:
Nicosulfuron comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 1 1
1 Below lower detection limit 2321 2322
. Missing 290 2612

URXOMO - O-methoate (ug/L)

Variable Name:
URXOMO
SAS Label:
O-methoate (ug/L)
English Text:
O-methoate (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.07 to 0.07 Range of Values 2455 2455
. Missing 157 2612

URDOMOLC - O-methoate comment code

Variable Name:
URDOMOLC
SAS Label:
O-methoate comment code
English Text:
O-methoate comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2455 2455
. Missing 157 2612

URXOXS - Oxasulfuron (ug/L)

Variable Name:
URXOXS
SAS Label:
Oxasulfuron (ug/L)
English Text:
Oxasulfuron (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.042 to 0.1 Range of Values 2355 2355
. Missing 257 2612

URDOXSLC - Oxasulfuron comment code

Variable Name:
URDOXSLC
SAS Label:
Oxasulfuron comment code
English Text:
Oxasulfuron comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 1 1
1 Below lower detection limit 2354 2355
. Missing 257 2612

URXPCP - Pentachlorophenol (ug/L)

Variable Name:
URXPCP
SAS Label:
Pentachlorophenol (ug/L)
English Text:
Pentachlorophenol (ug/L) result
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.35 to 56.16 Range of Values 2354 2354
. Missing 258 2612

URDPCPLC - Pentachlorophenol comment code

Variable Name:
URDPCPLC
SAS Label:
Pentachlorophenol comment code
English Text:
Pentachlorophenol comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 801 801
1 Below lower detection limit 1553 2354
. Missing 258 2612

URXPIM - Primisulfuron methyl (ug/L)

Variable Name:
URXPIM
SAS Label:
Primisulfuron methyl (ug/L)
English Text:
Primisulfuron methyl (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.042 to 0.042 Range of Values 2250 2250
. Missing 362 2612

URDPIMLC - Primisulfuron methyl comment code

Variable Name:
URDPIMLC
SAS Label:
Primisulfuron methyl comment code
English Text:
Primisulfuron methyl comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2250 2250
. Missing 362 2612

URXPPX - 2-isopropoxyphenol (ug/L)

Variable Name:
URXPPX
SAS Label:
2-isopropoxyphenol (ug/L)
English Text:
2-isopropoxyphenol (ug/L) result
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.28 to 0.28 Range of Values 2387 2387
. Missing 225 2612

URDPPXLC - 2-isopropoxyphenol comment code

Variable Name:
URDPPXLC
SAS Label:
2-isopropoxyphenol comment code
English Text:
2-isopropoxyphenol comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2387 2387
. Missing 225 2612

URXPRO - Prosulfuron (ug/L)

Variable Name:
URXPRO
SAS Label:
Prosulfuron (ug/L)
English Text:
Prosulfuron(ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.035 to 0.07 Range of Values 2247 2247
. Missing 365 2612

URDPROLC - Prosulfuron comment code

Variable Name:
URDPROLC
SAS Label:
Prosulfuron comment code
English Text:
Prosulfuron comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 1 1
1 Below lower detection limit 2246 2247
. Missing 365 2612

URXPTU - Propylenethio urea (ug/L)

Variable Name:
URXPTU
SAS Label:
Propylenethio urea (ug/L)
English Text:
Propylenethio urea (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.07 to 2.74 Range of Values 2456 2456
. Missing 156 2612

URDPTULC - Propylenethio urea comment code

Variable Name:
URDPTULC
SAS Label:
Propylenethio urea comment code
English Text:
Propylenethio urea comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 3 3
1 Below lower detection limit 2453 2456
. Missing 156 2612

URXRIM - Rimsulfuron (ug/L)

Variable Name:
URXRIM
SAS Label:
Rimsulfuron (ug/L)
English Text:
Rimsulfuron (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.042 to 0.042 Range of Values 2284 2284
. Missing 328 2612

URDRIMLC - Rimsulfuron comment code

Variable Name:
URDRIMLC
SAS Label:
Rimsulfuron comment code
English Text:
Rimsulfuron comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2284 2284
. Missing 328 2612

URXSMM - Sulfometuron methyl (ug/L)

Variable Name:
URXSMM
SAS Label:
Sulfometuron methyl (ug/L)
English Text:
Sulfometuron methyl (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.035 to 0.035 Range of Values 2067 2067
. Missing 545 2612

URDSMMLC - Sulfometuron methyl comment code

Variable Name:
URDSMMLC
SAS Label:
Sulfometuron methyl comment code
English Text:
Sulfometuron methyl comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2067 2067
. Missing 545 2612

URXSSF - Sulfosulfuron (ug/L)

Variable Name:
URXSSF
SAS Label:
Sulfosulfuron (ug/L)
English Text:
Sulfosulfuron (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.035 0.035 2389 2389
0.07 0.07 1 2390
0.09 0.09 1 2391
. Missing 221 2612

URDSSFLC - Sulfosulfuron comment code

Variable Name:
URDSSFLC
SAS Label:
Sulfosulfuron comment code
English Text:
Sulfosulfuron comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 2 2
1 Below lower detection limit 2389 2391
. Missing 221 2612

URXTHF - Thifensulfuron methyl (ug/L)

Variable Name:
URXTHF
SAS Label:
Thifensulfuron methyl (ug/L)
English Text:
Thifensulfuron methyl (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.057 to 0.057 Range of Values 2355 2355
. Missing 257 2612

URDTHFLC - Thifensulfuron methyl comment code

Variable Name:
URDTHFLC
SAS Label:
Thifensulfuron methyl comment code
English Text:
Thifensulfuron methyl comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2355 2355
. Missing 257 2612

URXTRA - Triasulfuron (ug/L)

Variable Name:
URXTRA
SAS Label:
Triasulfuron (ug/L)
English Text:
Triasulfuron (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.049 to 0.049 Range of Values 2250 2250
. Missing 362 2612

URDTRALC - Triasulfuron comment code

Variable Name:
URDTRALC
SAS Label:
Triasulfuron comment code
English Text:
Triasulfuron comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2250 2250
. Missing 362 2612

URXTRN - Triflusulfuron methyl (ug/L)

Variable Name:
URXTRN
SAS Label:
Triflusulfuron methyl (ug/L)
English Text:
Triflusulfuron methyl (ug/L)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0.035 to 0.035 Range of Values 2427 2427
. Missing 185 2612

URDTRNLC - Triflusulfuron methyl comment code

Variable Name:
URDTRNLC
SAS Label:
Triflusulfuron methyl comment code
English Text:
Triflusulfuron methyl comment code
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
0 At or above the detection limit 0 0
1 Below lower detection limit 2427 2427
. Missing 185 2612

URXUCR - Creatinine, urine (mg/dL)

Variable Name:
URXUCR
SAS Label:
Creatinine, urine (mg/dL)
English Text:
Creatinine, urine (mg/dL)
Target:
Both males and females 6 YEARS - 150 YEARS
Code or Value Value Description Count Cumulative Skip to Item
7 to 648 Range of Values 2530 2530
. Missing 82 2612