Table 2.

Geometric mean and 95% confidence intervals of PFAS concentrations (μg/L) in overweight and obese adolescents from SOLAR, and young adults from Meta-AIR, compared to adolescents from the National Health and Nutrition Examination Survey (NHANES) years 2007–2008 and 2017–2018.

PFAS Sub-class	PFAS Name	SOLAR 2001–12	Meta-AIR 2014–18	NHANES Serum PFAS concentrations, Age 12–19 years
				Survey (Years): 2007–08	Survey (Years): 2017–18
PFSAs	PFOS	11.8 (10.8, 12.9)	3.31 (3.06, 3.58)	11.3 (10.3, 12.3)	2.68 (2.31, 3.12)
	PFHxS	1.44 (1.34, 1.56)	1.05 (0.92, 1.19)	2.40 (2.09, 2.75)	0.87 (0.73, 1.02)
	PFHpS	0.37 (0.35, 0.40)	0.18 (0.17, 0.19)	N.R.	0.15 (0.12, 0.20)
PFCAs	PFOA	3.29 (3.09, 3.50)	1.34 (1.26, 1.42)	3.91 (3.71, 4.12)	1.42 (1.33, 1.52)
	PFNA	0.59 (0.57, 0.61)	0.48 (0.46, 0.50)	1.16 (1.04, 1.30)	0.35 (0.29, 0.42)

Abbreviations: PFSAs: perfluorosulfonic acids; PFCAs: perfluorocarboxylic acids; N.R.: not reported