Chemical Group
Organophosphate Pesticides
Chemical Name
Project Name
Biomonitoring Exposures Study (BEST) - 2.Expanded
Units
µg/g creatinine
Measured in
Urine
Study Group Subset
Geometric mean (95% Confidence Interval)
0.997
95% Confidence Interval lower
0.883
95% Confidence Interval upper
1.13
25th
<LOD
50th
0.953
75th
1.40
95th
2.61
Number of people tested
218.00
Detection Frequency
74.6%
Limit of Detection (LOD), wet-weight
0.500 µg/L
Indicates Exposure to
Chlorpyrifos (Chlorpyrifos methyl)
Footnote
●Expanded BEST data from 218 participants was weighted, a statistical method to adjust over-represented and under-represented samples, so that the summary results adequately reflect the population of California’s Central Valley. Unweighted results are available to download on the Biomonitoring Exposures Study (BEST) – 2. Expanded project page.
Summary Result Type
Weighted - Unweighted
