Table 2.

Descriptive statistics of first trimester maternal and cord blood plasma perfluoroalkyl substance levels (ng/mL) ^a.

Perfluoroalkyl Substance	First Trimester (N = 1723)				Cord Blood (N = 1301)
	25%	Median	75%	Range	25%	Median	75%	Range
Perfluorooctanoate (PFOA)	1.10	1.70	2.40	LOD–16	0.22	0.39	0.61	LOD–5.60
Perfluorooctanesulfonate (PFOS)	3.30	4.60	6.80	LOD–36	0.15	0.15	0.77	LOD–5.80
Perfluorohexanesulfanoate (PFHxS)	0.66	1.00	1.60	LOD–40	0.10	0.10	0.29	LOD–1.9

^a First trimester LODs = 0.1 (PFOA), 0.3 (PFOS), 0.3 (PFHxS). Cord blood LODs = 0.3 (PFOA), 0.3 (PFOS), 0.3 (PFHxS) (all ng/mL).