Updated Tables, September 2013 [PDF - 9,479 KB]
The Fourth National Report on Human Exposure to Environmental Chemicals, Updated Tables, September 2013 provides new data since the release of the Fourth Report, 2009. Since the publication of the Fourth Report, 201 chemicals have been updated and data on 49 chemicals have been added. This update also includes new data for 91 chemicals measured in serum pooled samples. Review this publication for the most recent and complete biomonitoring data.
The Updated Tables, September 2013, present data from the 2005-2006, 2007-2008, and 2009-2010 survey periods. The Updated Tables are cumulative and include data reported in earlier updates.
Fourth Report, 2009 [PDF - 6,517 KB]
The Fourth National Report on Human Exposure to Environmental Chemicals, 2009, (the Fourth Report, 2009) presents data for 212 chemicals. The Fourth Report includes the findings from nationally representative samples for 1999-2004.
The blood and urine samples reported in both publications were collected from participants in CDC's National Health and Nutrition Examination Survey (NHANES), which obtains and releases health-related data from a nationally representative sample in two year cycles.