Table 2.

Median and interquartile range (IQR) of estimated PFAS concentrations at 3, 6 and 12 months as well as the measured serum-PFAS concentrations at birth and 18 months in the 298 members of the birth cohort.

PFAS (ng/mL)	Birth	3 months	6 months	12 months	18 months
PFOS	2.86 (1.85)	4.04 (2.03)	5.27 (3.02)	6.60 (4.47)	6.89 (5.46)
PFOA	0.89 (0.69)	1.31 (0.70)	1.79 (1.07)	2.40 (1.79)	2.75 (2.49)
PFHxS	0.17 (0.10)	0.25 (0.16)	0.28 (0.19)	0.30 (0.33)	0.23 (0.31)
PFNA	0.31 (0.17)	0.45 (0.19)	0.62 (0.27)	0.88 (0.56)	0.96 (0.75)
PFDA	0.09 (0.05)	0.12 (0.04)	0.15 (0.06)	0.22 (0.11)	0.28 (0.19)