Table 1. Summary Statistics for PFAS Concentrations (ng/mL) Measured in Project Viva Midchildhood (Age 6–10 Years) Plasma Samples (N = 653)a.
| PFAS analyte (ng/mL) | N (%) detect | geometric mean | minimum | 10th percentile | median | 90th percentile | maximum |
|---|---|---|---|---|---|---|---|
| PFOS (sum) | 650 (99.5) | 6.2 | <LOD | 2.8 | 6.2 | 13.7 | 51.4 |
| n-PFOS | 650 (99.5) | 4.5 | <LOD | 2.0 | 4.4 | 9.9 | 34.2 |
| Sm-PFOS | 650 (99.5) | 1.7 | <LOD | 0.7 | 1.7 | 4.0 | 16.8 |
| Sm2-PFOS | 9 (1.4) | <LOD | <LOD | <LOD | <LOD | <LOD | 0.4 |
| PFOA (sum) | 650 (99.5) | 4.2 | <LOD | 2.3 | 4.4 | 7.9 | 14.3 |
| n-PFOA | 650 (99.5) | 4.0 | <LOD | 2.3 | 4.1 | 7.4 | 13.8 |
| Sb-PFOA | 376 (57.6) | 0.2 | <LOD | <LOD | 0.2 | 0.6 | 2.4 |
| PFHxS | 650 (99.5) | 2.2 | <LOD | 0.8 | 1.9 | 7.0 | 56.8 |
| PFNA | 650 (99.5) | 1.7 | <LOD | 0.8 | 1.5 | 3.8 | 25.7 |
| Et-PFOSA-AcOH | 34 (5.2) | <LOD | <LOD | <LOD | <LOD | <LOD | 1.4 |
| Me-PFOSA-AcOH | 424 (64.9) | 0.3 | <LOD | <LOD | 0.3 | 1.3 | 6.7 |
| PFDeA | 576 (88.2) | 0.3 | <LOD | <LOD | 0.3 | 0.6 | 1.9 |
| FOSA | 6 (0.9) | <LOD | <LOD | <LOD | <LOD | <LOD | 0.5 |
a
Limit of detection (LOD) = 0.1 ng/mL.