Studying the effects of PFOA contamination on the health of the ...

<strong>PFOA</strong> and PFOS in serum <strong>of</strong> general population•Median <strong>PFOA</strong> background level in <strong>the</strong> US is 5 ng/ml(ppb), detectable in most everyone. Highly correlatedwith PFOS (perfluoroctane sulfonic acid) which hasmedian background level <strong>of</strong> about 25 ng/ml, and mayalso be toxic (Calafat 2006).•Present in serum <strong>of</strong> most people in industrializedcountries. In Australia median levels <strong>of</strong> <strong>PFOA</strong> andPFOS are 7 ng/ml and 21 ng/ml respectively (Karrmanet al. 2007)