Results for Perfluoroalkyl and Polyfluoroalkyl Substances (PFASs)

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Results on page last updated: 08/07/2019

Chemical Group: Perfluoroalkyl and Polyfluoroalkyl Substances (PFASs)

  • Measured in: Serum

Project: Asian/Pacific Islander Community Exposures (ACE) Project - ACE 1

A mulit-generational family of Asian-Americans sharing a meal
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
4:2 FTS 4:2 FTS ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0120
5:3 FTCA 5:3 FTCA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0500
6:2 diPAP 6:2 diPAP ng/ml 96 * * * <LOD <LOD <LOD <LOD 7.3% 0.0500
6:2 FTCA 6:2 FTCA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.250
6:2 FTS 6:2 FTS ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0500
6:2 FTUCA 6:2 FTUCA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0120
6:6 PFPiA 6:6 PFPiA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0120
6:8 PFPiA 6:8 PFPiA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0500
7:3 FTCA 7:3 FTCA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0500
8:2 diPAP 8:2 diPAP ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.250
8:2 FTCA 8:2 FTCA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.500
8:2 FTS 8:2 FTS ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0500
8:2 FTUCA 8:2 FTUCA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0120
8:2 PAP 8:2 PAP ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.500
Et-PFOSA-AcOH Et-PFOSA-AcOH ng/ml 96 * * * <LOD <LOD <LOD <LOD 5.2% 0.0500
Me-PFOSA-AcOH Me-PFOSA-AcOH ng/ml 96 0.0523 0.0421 0.0650 0.0256 0.0467 0.0959 0.228 95.8% 0.0120
PFBA PFBA ng/ml 96 * * * <LOD 0.0582 0.0846 0.140 62.5% 0.0500
PFBuS PFBuS ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0442
PFDeA PFDeA ng/ml 96 0.477 0.406 0.559 0.281 0.453 0.739 1.49 80.2% 0.250
PFDoA PFDoA ng/ml 96 * * * <LOD 0.0540 0.0788 0.134 56.3% 0.0500
PFDS PFDS ng/ml 96 * * * <LOD 0.0104 0.0204 0.048 53.1% 0.00965
PFHpA PFHpA ng/ml 96 * * * <LOD <LOD 0.0574 0.0868 30.2% 0.0500
PFHxA PFHxA ng/ml 96 0.176 0.162 0.191 0.151 0.180 0.214 0.276 97.9% 0.0556
PFHxPA PFHxPA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0500
PFHxS PFHxS ng/ml 96 0.767 0.66 0.891 0.432 0.789 1.41 1.81 100% 0.00945
PFNA PFNA ng/ml 96 0.987 0.870 1.12 0.65 0.948 1.33 2.24 99% 0.250
PFOA PFOA ng/ml 96 1.41 1.23 1.61 0.998 1.36 2.16 2.85 100% 0.0500
PFOPA PFOPA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0500
PFOS PFOS ng/ml 96 6.51 5.49 7.73 3.32 6.05 11.7 19.3 100% 0.0566
PFOSA PFOSA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0120
PFPeA PFPeA ng/ml 96 * * * <LOD <LOD <LOD <LOD 0% 0.0500
PFUA PFUA ng/ml 96 0.398 0.348 0.455 0.301 0.427 0.600 0.824 100% 0.0500

Project: Asian/Pacific Islander Community Exposures (ACE) Project - ACE 2

A mulit-generational family of Asian-Americans sharing a meal
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
4:2 FTS 4:2 FTS ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.0120
5:3 FTCA 5:3 FTCA ng/ml 99 * * * <LOD <LOD <LOD <LOD 2% 0.0500
6:2 diPAP 6:2 diPAP ng/ml 99 * * * <LOD <LOD <LOD <LOD 2% 0.0500
6:2 FTCA 6:2 FTCA ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.250
6:2 FTS 6:2 FTS ng/ml 99 * * * <LOD <LOD <LOD <LOD 3% 0.0500
6:2 FTUCA 6:2 FTUCA ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.0120
6:6 PFPiA 6:6 PFPiA ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.0100
6:8 PFPiA 6:8 PFPiA ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.0500
7:3 FTCA 7:3 FTCA ng/ml 99 * * * <LOD <LOD <LOD <LOD 5.1% 0.0500
8:2 diPAP 8:2 diPAP ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.250
8:2 FTCA 8:2 FTCA ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.500
8:2 FTS 8:2 FTS ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.0500
8:2 FTUCA 8:2 FTUCA ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.0120
8:2 PAP 8:2 PAP ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.500
Et-PFOSA-AcOH Et-PFOSA-AcOH ng/ml 99 * * * <LOD <LOD <LOD <LOD 3% 0.0500
Me-PFOSA-AcOH Me-PFOSA-AcOH ng/ml 99 0.0342 0.0291 0.0402 0.0197 0.0282 0.0538 0.114 97% 0.0120
PFBA PFBA ng/ml 99 0.0589 0.0531 0.0655 <LOD 0.0580 0.0736 0.0996 67.7% 0.0500
PFBuS PFBuS ng/ml 99 * * * <LOD <LOD <LOD <LOD 3% 0.0400
PFDeA PFDeA ng/ml 99 0.559 0.490 0.636 0.393 0.541 0.823 1.28 87.9% 0.250
PFDoA PFDoA ng/ml 99 * * * <LOD 0.0135 0.0226 0.0441 52.5% 0.0500
PFDS PFDS ng/ml 99 * * * <LOD 0.0505 0.0773 0.127 59.6% 0.0100
PFHpA PFHpA ng/ml 99 * * * <LOD <LOD <LOD 0.0699 20.2% 0.0500
PFHxA PFHxA ng/ml 99 0.189 0.166 0.215 0.124 0.174 0.268 0.453 98% 0.0600
PFHxPA PFHxPA ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.0500
PFHxS PFHxS ng/ml 99 1.29 1.14 1.45 0.787 1.21 1.81 3.05 100% 0.0100
PFNA PFNA ng/ml 99 1.10 0.988 1.22 0.84 1.08 1.49 2.21 99% 0.250
PFOA PFOA ng/ml 99 1.69 1.51 1.88 1.20 1.61 2.30 3.06 100% 0.0600
PFOPA PFOPA ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.0500
PFOS PFOS ng/ml 99 7.47 6.38 8.75 4.17 7.00 11.5 22.9 100% 0.191
PFOSA PFOSA ng/ml 99 * * * <LOD <LOD <LOD <LOD 3% 0.0100
PFPeA PFPeA ng/ml 99 * * * <LOD <LOD <LOD <LOD 0% 0.0500
PFUA PFUA ng/ml 99 0.453 0.391 0.525 0.309 0.443 0.740 1.12 98% 0.0500

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
Et-PFOSA-AcOH Et-PFOSA-AcOH ng/mL 110 * * * <LOD <LOD 0.022 0.163 24.5% 0.0313 ng/mL
Me-PFOSA-AcOH Me-PFOSA-AcOH ng/mL 110 0.174 0.142 0.213 0.0945 0.165 0.329 1.350 95.5% 0.0277 ng/mL
PFBuS PFBuS ng/mL 110 * * * <LOD <LOD <LOD 0.0680 11.8% 0.0411 ng/mL
PFDeA PFDeA ng/mL 110 0.245 0.216 0.278 0.160 0.254 0.334 0.767 100% 0.0349 ng/mL
PFDoA PFDoA ng/mL 110 0.0191 0.0166 0.0221 <LOD 0.0193 0.0303 0.0595 70.0% 0.0114 ng/mL
PFHpA PFHpA ng/mL 110 0.0483 0.0395 0.0591 0.0246 0.0543 0.0901 0.269 87.3% 0.010 ng/mL
PFHxS PFHxS ng/mL 110 1.43 1.19 1.73 0.917 1.52 2.43 6.87 99.1% 0.0206 ng/mL
PFNA PFNA ng/mL 110 0.994 0.920 1.07 0.730 0.984 1.35 1.86 100% 0.0154 ng/mL
PFOA PFOA ng/mL 110 1.97 1.76 2.19 1.36 1.99 2.92 4.70 100% 0.0087 ng/mL
PFOS PFOS ng/mL 110 7.00 6.12 8.00 4.66 7.10 10.4 25.8 100% 0.0621 ng/mL
PFOSA PFOSA ng/mL 110 * * * <LOD 0.0254 0.0487 0.195 52.7% 0.0225 ng/mL
PFUA PFUA ng/mL 110 0.128 0.111 0.148 0.0737 0.123 0.195 0.533 100% 0.0254 ng/mL

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
Et-PFOSA-AcOH Et-PFOSA-AcOH ng/mL 337 * * * <LOD <LOD 0.0208 0.0865 49.0% 0.00682 ng/mL
Me-PFOSA-AcOH Me-PFOSA-AcOH ng/mL 337 0.116 0.104 0.129 0.0591 0.117 0.217 0.595 97.6% 0.0114 ng/mL
PFDeA PFDeA ng/mL 337 0.188 0.173 0.205 0.106 0.188 0.305 0.662 82.5% 0.0877 ng/mL
PFDoA PFDoA ng/mL 337 * * * <LOD <LOD <LOD <LOD 3.3% 0.148 ng/mL
PFHpA PFHpA ng/mL 337 * * * <LOD 0.0228 0.0545 0.144 64.7% 0.0121 ng/mL
PFHxS PFHxS ng/mL 337 1.03 0.937 1.13 0.615 1.12 1.78 3.57 99.1% 0.0538 ng/mL
PFNA PFNA ng/mL 337 0.787 0.726 0.853 0.535 0.846 1.26 2.46 99.1% 0.0282 ng/mL
PFOA PFOA ng/mL 337 1.49 1.36 1.63 1.02 1.65 2.42 4.57 99.1% 0.0212 ng/mL
PFOS PFOS ng/mL 337 5.21 4.77 5.69 3.34 5.31 8.70 17.6 99.4% 0.0943 ng/mL
PFOSA PFOSA ng/mL 337 * * * <LOD <LOD <LOD 0.0954 28.2% 0.0426 ng/mL
PFUA PFUA ng/mL 337 0.106 0.0958 0.117 0.0567 0.112 0.205 0.502 83.4% 0.0371 ng/mL

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

CARE LA Study logo, showing California in blue with Los Angeles County in orange
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
Et-PFOSA-AcOH Et-PFOSA-AcOH ng/mL 425 * * * <LOD <LOD 0.0132 0.0457 31.3% 0.0115
Me-PFOSA-AcOH Me-PFOSA-AcOH ng/mL 425 0.0681 0.0630 0.0736 0.0405 0.0562 0.0942 0.341 100% 0.0114
PFBuS PFBS ng/mL 425 * * * <LOD <LOD <LOD <LOD 4.94% 0.0303
PFDeA PFDeA ng/mL 425 0.0967 0.0894 0.105 <LOD 0.0891 0.163 0.394 69.2% 0.0560
PFDoA PFDoA ng/mL 425 * * * <LOD <LOD <LOD <LOD 1.65% 0.110
PFHpA PFHpA ng/mL 425 * * * <LOD 0.0270 0.0499 0.0962 52.5% 0.0256
PFHxS PFHxS ng/mL 425 0.613 0.559 0.672 0.373 0.680 1.13 2.33 98.8% 0.0177
PFNA PFNA ng/mL 425 0.300 0.278 0.323 0.205 0.324 0.492 0.924 97.2% 0.0424
PFOA PFOA ng/mL 425 1.04 0.972 1.12 0.727 1.13 1.64 3.06 99.3% 0.0606
PFOS PFOS ng/mL 425 2.13 1.92 2.35 1.27 2.43 3.98 8.33 97.9% 0.0144
PFOSA PFOSA ng/mL 425 * * * <LOD <LOD 0.0145 0.0481 25.4% 0.0615
PFUA PFUA ng/mL 425 0.0829 0.0756 0.0909 0.0412 0.0842 0.164 0.381 82.4% 0.0285

Project: California Teachers Study (CTS)

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
Et-PFOSA-AcOH EtPFOSAAcOH ng/mL 1759 0.031 0.029 0.032 0.015 0.030 0.060 0.20 84.5% 0.011
Me-PFOSA-AcOH MePFOSAAcOH ng/mL 1759 0.20 0.19 0.21 0.10 0.20 0.41 1.3 98.4% 0.013
PFBuS PFBuS ng/mL 614 *,# * * <LOD <LOD <LOD 0.067 18.4% 0.022
PFDeA PFDeA ng/mL 1759 0.22 0.21 0.23 0.15 0.23 0.35 0.67 94.7% 0.032
PFDoA PFDoA ng/mL 1737 * * * <LOD <LOD <LOD 0.093 10.8% 0.036
PFHpA PFHpA ng/mL 1759 0.054 0.052 0.057 <LOD 0.054 0.11 0.28 74% 0.015
PFHxS PFHxS ng/mL 1759 1.62 1.56 1.68 1.04 1.58 2.50 6.24 99.9% 0.012
PFNA PFNA ng/mL 1719 0.92 0.89 0.95 0.67 0.95 1.3 2.3 99.7% 0.014
PFOA PFOA ng/mL 1759 2.46 2.39 2.53 1.69 2.50 3.63 6.22 99.9% 0.029
PFOS PFOS ng/mL 1759 6.80 6.56 7.04 4.57 7.14 10.9 19.5 99.8% 0.083
PFOSA PFOSA ng/mL 1597 0.036 0.034 0.039 <LOD 0.036 0.075 0.25 74.1% 0.01
PFUA PFUA ng/mL 1759 0.13 0.12 0.13 0.081 0.14 0.23 0.42 96.8% 0.01

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)
Et-PFOSA-AcOH EtPFOSAAcOH ng/mL 101 0.016 0.014 0.018 <LOD 0.016 0.023 0.060 65.3% 0.011
Me-PFOSA-AcOH MePFOSAAcOH ng/mL 101 0.16 0.13 0.18 0.086 0.14 0.24 0.61 100% 0.013
PFBuS PFBuS ng/mL 101 * * * <LOD <LOD <LOD 0.020 6.9% 0.02
PFDeA PFDeA ng/mL 101 0.899 0.783 1.03 0.512 0.721 1.72 2.63 100% 0.032
PFDoA PFDoA ng/mL 101 * * * <LOD <LOD <LOD <LOD 0% 0.040
PFHpA PFHpA ng/mL 101 0.13 0.11 0.15 0.06 0.12 0.22 0.63 75.2% 0.059
PFHxS PFHxS ng/mL 101 2.26 2 2.54 1.61 2.27 3.13 4.64 100% 0.012
PFNA PFNA ng/mL 101 1.15 1.06 1.25 0.888 1.13 1.49 2.21 100% 0.075
PFOA PFOA ng/mL 101 3.75 3.37 4.17 2.96 3.86 4.89 9.54 100% 0.301
PFOS PFOS ng/mL 101 12.5 11.3 13.8 10.1 12.7 16.8 24.7 100% 0.083
PFOSA PFOSA ng/mL 101 0.032 0.027 0.037 0.019 0.029 0.050 0.151 95.0% 0.009
PFUA PFUA ng/mL 101 0.24 0.21 0.27 0.17 0.26 0.37 0.53 100% 0.010

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
Et-PFOSA-AcOH Et-PFOSA-AcOH ng/mL 77 * * * <LOD 0.012 0.021 0.026 0.011
Me-PFOSA-AcOH Me-PFOSA-AcOH ng/mL 77 0.067 0.055 0.082 0.037 0.064 0.10 0.20 0.013
PFBuS PFBuS ng/mL 77 * * * <LOD <LOD <LOD <LOD 0.022
PFDeA PFDeA ng/mL 77 * * * <LOD <LOD 0.035 0.64 0.032
PFDoA PFDoA ng/mL 77 * * * <LOD <LOD <LOD <LOD 0.036
PFHpA PFHpA ng/mL 77 * * * <LOD <LOD 0.071 0.14 0.059
PFNA PFNA ng/mL 77 0.733 0.621 0.865 0.504 0.791 1.11 1.74 0.075
PFOA PFOA ng/mL 77 * * * <LOD 0.474 0.811 1.25 0.30
PFOS PFOS ng/mL 77 2.55 2.20 2.95 1.78 2.43 4.11 4.90 0.083
PFOSA PFOSA ng/mL 77 0.019 0.016 0.022 0.012 0.017 0.026 0.049 0.01
PFUA PFUA ng/mL 77 0.131 0.101 0.170 0.0730 0.165 0.261 0.474 0.01

Project: Measuring Analytes in Maternal Archived Samples (MAMAS)

Pregnant woman standing, hands holding her belly, in an outdoor setting
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
Et-PFOSA-AcOH Et-PFOSA-AcOH ng/mL 200 * * * <LOD <LOD 0.018 0.029 29% 0.016 ng/mL
Me-PFOSA-AcOH Me-PFOSA-AcOH ng/mL 200 0.045 0.038 0.053 0.018 0.037 0.091 0.361 79.5% 0.015 ng/mL
PFDeA PFDeA ng/mL 200 0.198 0.174 0.226 0.095 0.212 0.373 0.908 83% 0.065 ng/mL
PFDoA PFDoA ng/mL 200 * * * <LOD <LOD <LOD 0.317 8% 0.174 ng/mL
PFHpA PFHpA ng/mL 200 0.045 0.040 0.052 0.022 0.048 0.095 0.198 83.5% 0.015 ng/mL
PFHxS PFHxS ng/mL 200 0.904 0.818 0.998 0.558 0.861 1.43 2.83 100% 0.025 ng/mL
PFNA PFNA ng/mL 200 0.647 0.596 0.703 0.442 0.644 0.952 1.74 100% 0.030 ng/mL
PFOA PFOA ng/mL 200 1.24 1.15 1.34 0.898 1.29 1.77 2.81 100% 0.039 ng/mL
PFOS PFOS ng/mL 200 4.20 3.82 4.62 2.62 4.47 6.75 12.3 100% 0.057 ng/mL
PFOSA PFOSA ng/mL 200 * * * <LOD <LOD 0.007 0.027 33.5% 0.005 ng/mL
PFUA PFUA ng/mL 200 0.124 0.107 0.144 0.048 0.118 0.275 0.717 78% 0.043 ng/mL

Footnotes

*Geometric mean was not calculated because the chemical was found in less than 65% of the study group.
*Geometric mean was not calculated because the chemical was found in less than 65% of the study group
# As of March 2013, PFBuS is no longer measured due to instrumental background interference.