Fig. 2: PFAS serum concentrations from NCS IVS cohort by location.

Boxplots showing serum concentrations for (A) PFOA, (B) PFOS, (C) PFNA, (D) PFHxS, and (E) PFDA from NCS IVS participants in each of the 7 county-level locations, as well as serum concentrations from pregnant women in the 2009–2010 cycle of NHANES. (F) Serum concentrations from all NCS participants compared to those from NHANES pregnant women for each PFAS chemical. Boxplot widths are proportional to samples sizes for each population.