Table 3.

PFAS Concentrations in tap water and plasma collected in 1989–1990 from Nurses’ Health Study (NHS) participants ($n=110$).

	Plasma PFAS			Tap water PFAS
	$>\text{LOD}$ $n$ (%)	Median (IQR) [ng/mL]	Max [ng/mL]	$>\text{LOD}$ $n$ (%)	Median (IQR)a [ng/L]	Max [ng/L]
PFOA	110 (100)	4.78 (3.56, 6.47)	77.72	50 (45)	0.57 (0.46, 1.65)	104.74
PFNA	110 (100)	0.61 (0.41, 0.89)	11.53	31 (28)	0.13 (0.12, 0.35)	1.98
nPFOS	110 (100)	15.86 (12.27, 22.00)	79.83	58 (53)	0.43 (0.25, 1.43)	16.56
brPFOS	110 (100)	11.99 (9.10, 16.13)	47.45	50 (45)	1.12 (0.44, 1.91)	10.38
PFHxS	110 (100)	1.89 (1.04, 2.85)	52.66	67 (61)	0.57 (0.10, 1.86)	12.19

^aMedians (IQR) were only calculated for samples greater than the LOD (limit of detection).