Results for Phthalates

You may use, distribute or copy the information in these data tables, with attribution to Biomonitoring California.
For more information, visit our researchers page or contact us.
Results on page last updated: 03/01/2018

Chemical Group: Phthalates

  • Measured in: Urine

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

Diverse group of smiling adults
95% Confidence Interval Selected Percentiles
Chemical measured Indicates exposure to Units Number of people tested Geometric mean Lower Upper 25th 50th 75th 95th Detection frequency Limit of Detection (LOD), wet-weight
MBzP Benzylbutyl phthalate (BzBP) µg/L 109 7.49 5.99 9.36 3.65 7.27 18.6 41.9 100% 0.250 µg/L
MCHP Dicyclohexyl phthalate (DCHP) µg/L 109 * * * <LOD <LOD <LOD <LOD 1.83% 0.500 µg/L
MCPP Di-n-octyl phthalate (DnOP) µg/L 109 1.88 1.52 2.32 1.03 1.64 3.41 14.6 100% 0.125 µg/L
MECPP Di-2-ethylhexyl phthalate (DEHP) µg/L 109 12.1 10.0 14.7 7.10 11.7 20.0 51.7 100% 0.500 µg/L
MEP Diethyl phthalate (DEP) µg/L 109 57.1 45.2 72.1 25.5 52.1 103 584 97.2% 8.00 µg/L
MnBP Dibutyl phthalate (DBP), Benzylbutyl phthalate (BzBP) µg/L 109 19.0 16.1 22.4 11.7 18.5 31.6 73.5 98.2% 2.00 µg/L

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

Diverse group of smiling adults
95% Confidence Interval Selected Percentiles
Chemical measured Indicates exposure to Units Number of people tested Geometric mean Lower Upper 25th 50th 75th 95th Detection frequency Limit of Detection (LOD), wet-weight
MBzP Benzylbutyl phthalate (BzBP) ng/mL 218 6.00 5.13 7.02 3.00 6.03 11.9 54.8 100% 0.200 ng/mL
MCHP Dicyclohexyl phthalate (DCHP) ng/mL 218 * * * <LOD <LOD <LOD <LOD 0.459% 0.100 ng/mL
MCPP Di-n-octyl phthalate (DnOP) ng/mL 218 1.91 1.62 2.24 0.943 1.77 4.19 16.0 99.1% 0.100 ng/mL
MECPP Di-2-ethylhexyl phthalate (DEHP) ng/mL 218 9.72 8.51 11.1 5.56 10.2 18.6 47.9 100% 0.190 ng/mL
MEHHP Di-2-ethylhexyl phthalate (DEHP) ng/mL 218 6.19 5.37 7.13 3.58 6.81 11.8 31.3 99.5% 0.190 ng/mL
MEHP Di-2-ethylhexyl phthalate (DEHP) ng/mL 218 1.89 1.60 2.23 0.909 2.08 4.31 13.7 93.6% 0.190 ng/mL
MEOHP Di-2-ethylhexyl phthalate (DEHP) ng/mL 218 4.43 3.86 5.09 2.45 4.66 7.96 19.7 99.5% 0.100 ng/mL
MEP Diethyl phthalate (DEP) ng/mL 218 52.4 43.9 62.6 21.2 46.1 110 826 100% 0.460 ng/mL
MIBP Di-isobutyl phthalate (DIBP) ng/mL 218 7.12 6.21 8.16 3.84 6.71 12.0 38.0 94.0% 1.60 ng/mL
MnBP Dibutyl phthalate (DBP), Benzylbutyl phthalate (BzBP) ng/mL 218 14.3 12.4 16.6 7.74 16.2 27.8 79.7 98.2% 0.910 ng/mL

Project: Center for the Health Assessment of Mothers and Children of Salinas (CHAMACOS)

Chamacos logo shows a drawing of a sun with a face on it, and beneath this, a scroll with the word "chamacos"
95% Confidence Interval Selected Percentiles
Chemical measured Indicates exposure to Units Number of people tested Geometric mean Lower Upper 25th 50th 75th 90th Detection frequency Limit of Detection (LOD), wet-weight
MEP Diethyl phthalate (DEP) μg/L 49 85 63.1 115 41.3 70.0 211 403 100% 8.0
MnBP Dibutyl phthalate (DBP), Benzylbutyl phthalate (BzBP) μg/L 49 46.9 37.0 59.4 26.8 49.0 75.2 115 100% 2.0

Project: Firefighter Occupational Exposures (FOX) Project

Firefighters fighting flames, wearing full protective suits and holding large hoses spraying water
95% Confidence Interval Selected Percentiles
Chemical measured Indicates exposure to Units Number of people tested Geometric mean Lower Upper 25th 50th 75th 95th Detection frequency Limit of Detection (LOD), wet-weight
MBzP Benzylbutyl phthalate (BzBP) μg/L 101 8.18 6.56 10.2 3.93 7.76 14.9 41.3 100% 0.25
MCHP Dicyclohexyl phthalate (DCHP) μg/L 101 * * * <LOD <LOD <LOD <LOD 4.0% 0.50
MCPP Di-n-octyl phthalate (DnOP) μg/L 101 1.88 1.46 2.42 0.819 1.69 4.07 21.1 98.0% 0.125
MECPP Di-2-ethylhexyl phthalate (DEHP) μg/L 101 12.3 10.1 14.9 5.89 12.4 23.2 58.3 100% 0.50
MEP Diethyl phthalate (DEP) μg/L 101 52.9 38.1 73.4 20.6 46.6 168 740 79.2% 8.0
MnBP Dibutyl phthalate (DBP), Benzylbutyl phthalate (BzBP) μg/L 101 10.6 8.83 12.8 5.69 10.6 20.2 40.6 97.0% 2.0

Project: Markers of Autism Risk in Babies–Learning Early Signs (MARBLES)

Study logo shows a circular image of two parents with an infant cradled between them
95% Confidence Interval Selected Percentiles
Chemical measured Indicates exposure to Units Number of people tested Geometric mean Lower Upper 25th 50th 75th 90th Detection frequency Limit of Detection (LOD), wet-weight
MEP Diethyl phthalate (DEP) μg/L 13 65.1 26.0 163 -- 31.5 -- -- 100% 8.0
MnBP Dibutyl phthalate (DBP), Benzylbutyl phthalate (BzBP) μg/L 13 21.1 10.8 41.2 -- 23.2 -- -- 100% 2.0

Project: Markers of Autism Risk in Babies–Learning Early Signs (MARBLES)

Study logo shows a circular image of two parents with an infant cradled between them
95% Confidence Interval Selected Percentiles
Chemical measured Indicates exposure to Units Number of people tested Geometric mean Lower Upper 25th 50th 75th 90th Detection frequency Limit of Detection (LOD), wet-weight
MEP Diethyl phthalate (DEP) μg/L 15 62.4 32.2 121 -- 52.6 -- -- 100% 8.0
MnBP Dibutyl phthalate (DBP), Benzylbutyl phthalate (BzBP) μg/L 15 21.9 14.4 33.5 -- 21.3 -- -- 100% 2.0

Project: Maternal and Infant Environmental Exposure Project (MIEEP)

Pregnant woman seated in front of a laptop computer
95% Confidence Interval Selected Percentiles
Chemical measured Indicates exposure to Units Number of people tested Geometric mean Lower Upper 25th 50th 75th 90th Limit of Detection (LOD), wet-weight
MBzP Benzylbutyl phthalate (BzBP) μg/L 89 7.73 5.84 10.2 2.72 6.54 18.4 53.4 0.25
MCHP Dicyclohexyl phthalate (DCHP) μg/L 89 * * * <LOD <LOD <LOD <LOD 0.50
MCPP Di-n-octyl phthalate (DnOP) μg/L 89 0.87 0.72 1.05 0.48 0.75 1.2 2.8 0.125
MECPP Di-2-ethylhexyl phthalate (DEHP) μg/L 89 17.1 13.5 21.7 8.09 14.6 29.4 68.8 0.50
MEP Diethyl phthalate (DEP) μg/L 89 95.5 69.3 132 34.7 103 254 679 8.0
MnBP Dibutyl phthalate (DBP), Benzylbutyl phthalate (BzBP) μg/L 89 16.3 13.0 20.5 6.59 16.2 34.2 60.8 2.0

Footnotes

*Geometric mean was not calculated because the chemical was found in less than 65% of the study group