about this participant:

Participant #2, a journalist from Silver Spring, MD, participated in the 2006 biomonitoring investigation entitled "EWG Study #5, Teflon and mercury in blood in adults and teens." She gave blood for the study on November 17, 2004 at age 55.


Silver Spring, MD

Participant's groups:

Female, Adult


EWG Study #5, Teflon and mercury in blood in adults and teens

Sample Date:

November 17, 2004

health & safety concerns:
chemicals found in this person
Birth defects and developmental delays2
Endocrine system1
Kidney and renal system1
Reproduction and fertility1
Brain and nervous system1
Immune system (including sensitization and allergies)1
Behavioral effects1

picture of Participant #2

Participant: Participant #2
Found 8 of 14 tested chemicals

Participant #2's blood contained 8 of 14 industrial compounds, pollutants and other chemicals tested, including chemicals linked to cancer, birth defects and developmental delays, and endocrine system toxicity.

Summary of chemicals found in Participant #2

chemical family level found health effects exposure routes
Perfluorochemicals (PFCs)lowCancer, Birth defects and developmental delays, Endocrine system Stain- and grease-proof coatings on food packaging, couches, carpets, pans
Methylmercurylow Dietary sources, particularly seafood

Test results by chemical family (see each chemical)

perfluorochemicals (pfcs)

7 of 13 found — see each chemical

Includes Teflon, Scotchgard, Stainmaster. Linked to cancer and birth defects.

  • cumulative level found: 8.51 ng/g (wet weight) in blood serum
  • Low vs 8 tested in EWG/Commonweal studies (13th %ile)
8.51ng/g (wet weight) in blood serum59.7

Total Perfluorochemicals (PFCs)


1 of 1 found

Forms from mercury, a pollutant from coal-fired power plants and other sources. Methylmercury accumulates in seafood and harms brain development and function.

  • level found: 0.106 ug/L (wet weight) in whole blood
  • Low vs 88 tested in EWG/Commonweal studies (7th %ile)
  • Low vs 8,373 tested in CDC biomonitoring [1] (14th %ile) (comparison based on congeners tested by CDC)
ug/L (wet weight) in whole blood25.9

Chemicals not found in Participant #2

6 chemicals

PFBS (Perfluorobutane sulfonate), PFDoA (Perfluorododecanoic acid), PFHxA (Perfluorohexanoic acid), PFPeA (Perfluoro-n-pentanoic acid), PFTA (Perfluorotetradecanoic acid), PFBA (Perfluorobutyric acid)


[1] CDC (2005). National Report on Human Exposure to Environmental Chemicals, Centers for Disease Control. http://www.cdc.gov/exposurereport/. (Methylmercury results have been compared to total mercury in CDC biomonitoring.)

See results for this participant's group