Table 1.
Descriptive statistics of PFAS (ng/mL) in 691 DPP participants included in this study
| PFAS | % <LOD | Geometric mean | 5% | 25% | 50% | 75% | 95% |
|---|---|---|---|---|---|---|---|
| Total PFOS | -- | 26.1 | 9.2 | 17.3 | 26.6 | 40.3 | 72.4 |
| n-PFOS | 0% | 18.3 | 6.2 | 11.7 | 18.3 | 28.5 | 53.0 |
| Sm-PFOS | 0% | 7.3 | 2.4 | 4.8 | 7.6 | 11.3 | 20.2 |
| Sm2-PFOS | 60.4% | 0.1 | -- | -- | -- | 0.3 | 0.6 |
| Total PFOA | -- | 4.9 | 2.0 | 3.6 | 5.0 | 6.8 | 12.0 |
| n-PFOA | 0% | 4.4 | 1.8 | 3.2 | 4.4 | 6.0 | 10.0 |
| Sb-PFOA | 16.7% | 0.4 | -- | 0.3 | 0.5 | 0.9 | 1.7 |
| PFHxS | 0.1% | 2.4 | 0.7 | 1.5 | 2.3 | 3.8 | 10.7 |
| PFNA | 7.1% | 0.5 | -- | 0.4 | 0.6 | 0.8 | 1.9 |
| EtFOSAA | 3.5% | 1.1 | 0.2 | 0.6 | 1.2 | 2.1 | 5.7 |
| MeFOSAA | 2.9% | 0.9 | 0.3 | 0.5 | 1.0 | 1.7 | 3.3 |
| PFDeA | 76.6% | 0.1 | -- | -- | -- | -- | 0.5 |
| PFOSA | 62.0% | 0.1 | -- | -- | -- | 0.3 | 0.9 |
LOD was 0.1 ng/mL for all PFAS.
Total PFOS = n-PFOS + Sm-PFOS + Sm2-PFOS. Total PFOA = n-PFOA + Sb-PFOA. Abbreviations: LOD, limit of detection; EtFOSAA, 2-(N-ethyl-perfluorooctane sulfonamido) acetic acid; MeFOSAA, 2-(N-methyl-perfluorooctane sulfonamido) acetic acid; n-PFOA, linear PFOA; n-PFOS, linear PFOS; PFDeA, perfluorodecanoic acid; PFHxS, perfluorohexane sulfonic acid; PFNA, perfluorononanoic acid; PFOA, perfluorooctanoic acid; PFOS, perfluorooctanesulfonic acid; PFOSA, perfluorooctanesulfonamide; Sb-PFOA, branched isomers of PFOA; Sm-PFOS, monomethyl branched isomer of PFOS; Sm2-PFOS, monomethyl branched isomer of PFOS.