Table 2.

Percentiles of serum concentrations of per- and polyfluoroalkyl substances (PFAS), ng/mL (n = 573).

		Percentile
	% > LOQ	5	25	50	75	95	Maximum Value
PFOS	99.5	1.20	3.41	7.37	17.70	102.00	432.00
PFOA	99.0	0.37	0.91	1.66	5.00	31.70	139.00
PFHxS	99.5	0.29	1.06	2.17	5.65	45.90	430.50
PFNA	93.9	0.07	0.23	0.35	0.55	1.13	7.18
PFBS	46.2	0.07	0.07	0.07	0.24	22.90	2680.00
PFOSA	0.2	0.07	0.07	0.07	0.07	0.07	0.12
MeFOSAA	38.9	0.07	0.07	0.07	0.19	1.08	6.60
EtFOSAA	5.8	0.07	0.07	0.07	0.07	0.12	1.76
PFBA	9.1	0.07	0.07	0.07	0.07	0.15	4.99
PFPeA	5.1	0.07	0.07	0.07	0.07	0.10	1.06
PFHpA	10.6	0.07	0.07	0.07	0.07	0.16	1.37
PFDA	64.7	0.07	0.07	0.14	0.23	0.45	1.22
PFHxA	0.0	0.07	0.07	0.07	0.07	0.07	0.07

Note: Limit of quantification (LOQ) = 0.1, values <LOQ re-expressed as LOQ/√2 = 0.07

PFOS = perfluoroalkyl substances; PFOA = perfluorooctanoic acid; PFHxS = perfluorohexanesulfonic acid; PFNA = perfluorononanoic acid; PFBS = perfluorobutanesulfonic acid; PFOSA = perfluorooctane sulfonamide; MeFOSAA = 2-(N-methyl-perfluorooctane sulfonamido) acetic acid; EtFOSAA = 2-(N-Ethyl-perfluorooctane sulfonamido acetic acid; PFBA = perfluorobutanoic acid; PFPeA = perfluoropentanoic acid; PFHpA = perfluoroheptanoic acid; PFDA = perfluorodecanoic acid; PFHxA = perfluorohexanoic acid