What is the average amount of PFAS in a person's blood?

Most people in the U.S. have been exposed to PFAS and have PFAS in their blood, especially PFOS and PFOA. During 2013-2014, the general population had, on average, below 5 micrograms per liter, or µg/L, of PFOA in their blood. In comparison, in 2000, highly exposed workers in PFAS manufacturing facilities had average measurements of more than 1000 µg/L of PFOA in their blood. As the production and use of PFOS and PFOA in the United States has declined, their levels in blood have gone down as well. From 1999 to 2014, blood PFOA levels among the general U.S. population have declined by more than 60% and blood PFOS levels have declined by more than 80%. For more information on PFAS blood level trends in the U.S., please read the Agency for Toxic Substances and Disease Registry's (ATSDR) fact sheet on PFAS in the U.S. Population. The ATSDR is a federal public health agency of the U.S. Department of Health and Human Services.

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1. What are PFAS?
2. Are PFAS regulated by the federal or state government?
3. I keep hearing different numbers referenced for Wisconsin’s PFOA and PFOS drinking water advisories. What does this mean for me, and how do I keep my family safe?
4. What are the health effects of PFAS?
5. How are we exposed to PFAS?
6. How can I reduce my exposure?
7. Should I be worried about dermal (skin) exposure to PFAS?
8. Can I use my tap water for typical household activities?
9. How can I safely feed an infant?
10. Can a medical test show whether I’ve been exposed to PFAS?
11. What is the average amount of PFAS in a person's blood?
12. Who can I contact about health questions related to PFAS?
13. Other Resources for PFAS Information