Table 3.
Concentrations (in ng/mL) of per- and polyfluoroalkyl substances (PFASs) in maternal pregnancy plasma and child plasma (median age 7.7) for study participantsa
| PFAS | % Detect (≥LOD) | Median (25th %ile–75th %ile) | Minimum | Maximum |
|---|---|---|---|---|
| Prenatal concentrations (sampled 1999–2002, n=1095) | ||||
| PFOA | 100 | 5.6 (4.1–7.7) | 0.8 | 49.3 |
| PFOS | 99.9 | 24.9 (18.4–34.4) | <LOD | 185.0 |
| PFHxS | 99.3 | 2.4 (1.6–3.7) | <LOD | 46.4 |
| PFNA | 98.9 | 0.6 (0.5–0.9) | <LOD | 6.0 |
| EtFOSAA | 99.6 | 1.2 (0.7–1.9) | <LOD | 33.6 |
| MeFOSAA | 100 | 1.9 (1.2–3.0) | 0.1 | 29.7 |
| PFDeA | 45.1 | <LOD (<LOD–0.3) | <LOD | 3.0 |
| FOSA | 10.9 | All <LOD | <LOD | 1.8 |
| Childhood concentrations (sampled 2007–2010, n=642) | ||||
| PFOA | 99.5 | 4.4 (3.1–6.0) | <LOD | 14.3 |
| PFOS | 99.5 | 6.2 (4.2–9.7) | <LOD | 51.4 |
| PFHxS | 99.5 | 1.9 (1.2–3.4) | <LOD | 56.8 |
| PFNA | 99.5 | 1.5 (1.1–2.3) | <LOD | 25.7 |
| EtFOSAA | 5.1 | All <LOD | <LOD | 1.4 |
| MeFOSAA | 65.2 | 0.3 (<LOD–0.6) | <LOD | 6.7 |
| PFDeA | 88.3 | 0.3 (0.2–0.5) | <LOD | 1.9 |
| FOSA | 0.1 | All <LOD | <LOD | 0.5 |
a
Limit of detection (LOD) was 0.1 ng/mL except for prenatal PFOS measures (LOD=0.2 ng/mL)