Results for Chemical Groups

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Chemical Group: Metals

  • Measured in: Blood

Project: Biomonitoring Exposures Study (BEST) - 1.Pilot

Unweighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight
Lower Upper 25th 50th 75th 95th
Manganese Manganese µg/L 110 8.09 7.62 8.58 6.50 8.40 9.80 13.4 100% 0.45 µg/L

Project: Biomonitoring Exposures Study (BEST) - 2.Expanded

Weighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 95th
Manganese Manganese µg/L 315 9.17 8.76 9.60 7.63 9.08 10.8 15.7 100% 1.00 µg/L

Project: California Regional Exposure Study, Los Angeles County (CARE-LA)

CARE LA Study logo, showing California in blue with Los Angeles County in orange

Weighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 95th
Manganese Manganese µg/L 425 10.6 10.1 11.2 8.38 10.4 12.6 20.3 100% 0.750 µg/L

Project: California Regional Exposure Study, Region 2 (CARE-2)

Logo for the CARE-2 study showing a blue map of California with the eastern part of California in orange

Weighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 95th
Manganese Manganese µg/L 359 10.1 9.71 10.6 8.03 9.96 12.3 15.9 100% 0.250 µg/L

Project: California Regional Exposure Study, Region 3 (CARE-3)

Logo for the CARE-3 study showing a blue map of California with Orange and San Diego counties in orange
  • Study Group Subset: Adults

Unweighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 90th
Manganese Manganese µg/L 88 9.13 8.46 9.87 7.12 9.54 11.9 14.1 100% 0.250 µg/L

Project: Firefighter Occupational Exposures (FOX) Project

  • Study Group Subset: Firefighters

Unweighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of detection (LOD)
Lower Upper 25th 50th 75th 95th
Manganese Manganese μg/L 101 7.61 7.26 7.98 6.50 7.70 8.79 11.4 100% 0.54

Chemical Group: Metals

  • Measured in: Urine

Project: Biomonitoring Exposures Study (BEST) - 2.Expanded

Weighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 95th
Manganese Manganese µg/L 218 * * * <LOD 0.0555 0.106 0.461 56.3% 0.0449 µg/L
Manganese Manganese µg/g creatinine 218 * * * <LOD 0.0632 0.123 0.89 56.3% 0.0449 µg/L

Project: California Regional Exposure Study, Los Angeles County (CARE-LA)

CARE LA Study logo, showing California in blue with Los Angeles County in orange

Weighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 95th
Manganese Manganese µg/L 428 * * * < LOD < LOD < LOD 0.174 15.2% 0.100 µg/L
Manganese Manganese µg/g creatinine 426 * * * < LOD < LOD < LOD 0.611 15.4% 0.100 µg/L

Project: California Regional Exposure Study, Region 2 (CARE-2)

Logo for the CARE-2 study showing a blue map of California with the eastern part of California in orange

Weighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 95th
Manganese Manganese µg/L 357 * * * < LOD < LOD < LOD 0.212 15.4% 0.100 µg/L
Manganese Manganese µg/g creatinine 357 * * * < LOD < LOD < LOD 0.555 15.4% 0.100 µg/L

Project: California Regional Exposure Study, Region 3 (CARE-3)

Logo for the CARE-3 study showing a blue map of California with Orange and San Diego counties in orange
  • Study Group Subset: Adults

Unweighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight Notes
Lower Upper 25th 50th 75th 90th
Manganese Manganese µg/L 90 * * * <LOD <LOD <LOD 0.132 18.9% 0.100 µg/L

Project: Firefighter Occupational Exposures (FOX) Project

  • Study Group Subset: Firefighters

Unweighted Results

Chemical measured Indicates Exposure to Units Number of people tested Geometric mean 95% Confidence Interval Selected Percentiles Detection Frequency Limit of Detection (LOD), wet-weight
Lower Upper 25th 50th 75th 90th
Manganese Manganese μg/L 99 * * * <LOD <LOD <LOD <LOD 9.1% 0.184