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. 2021 Apr 6;32(1):27–36. doi: 10.1038/s41370-021-00322-8

Table 2.

Distribution of second trimester plasma levels of corticotropin-releasing hormone (pg/mL) and second trimester serum levels of per- and poly-fluoroalkyl substances (ng/mL) (N = 497).

% Above MDL % Machine readable Geometric mean (geometric SD) Percentile
5th 25th 50th 75th 95th
CRH 100.00 100.00 30.10 (2.19) 8.62 17.77 32.56 50.73 99.21
PFNA  98.79 99.60 0.30 (1.92) 0.10 0.20 0.30 0.43 0.85
PFOA  99.80 100.00 0.73 (1.97) 0.25 0.46 0.76 1.12 2.11
PFHxS  100.00 100.00 0.36 (2.26) 0.11 0.20 0.32 0.58 1.49
PFOS  100.00 100.00 1.86 (2.07) 0.51 1.18 1.92 3.11 6.00
Me-PFOSA-AcOH  98.79 99.80 0.05 (2.07) 0.02 0.03 0.05 0.08 0.18

SD standard deviation; MDL method detection limit.