Chemical and Toxicological Information

The National Report on Human Exposure to Environmental Chemicals (Report) present biomonitoring data on the exposure of the U.S. population to environmental chemicals. The measurement of an environmental chemical in a person’s blood or urine does not mean, by itself, that the chemical causes disease or adverse effects. Advances in analytical methods allow us to measure lower and lower levels of environmental chemicals in people. Separate studies of varying exposure levels and health effects associated with these levels are required to determine whether blood, serum, and urine levels result in disease or adverse effects. The data and information in the Report do not establish health effects nor do they create guidelines.

Where can I find more information?

For more information about environmental chemicals, web links are provided below. Links to nonfederal organizations are provided solely as a service to our readers. These links do not constitute an endorsement of these organizations or their programs by CDC or the federal government. CDC is not responsible for the content of an individual organization’s Web pages found at these links.

U.S. Governmental Sources

Centers for Disease Control and Prevention (CDC)

National Center for Health Statistics (NCHS)

National Health and Nutrition Examination Survey (NHANES)

National Institute for Occupational Safety and Health (NIOSH)

National Center for Environmental Health (NCEH)

National Biomonitoring Program

Agency for Toxic Substances and Disease Registry (ATSDR)

Toxicological Profiles and ToxFAQs

Toxic Substances Portal

U.S. Food and Drug Administration (FDA)

Center for Food Safety and Applied Nutrition icon

National Center for Toxicological Research icon

U.S. Environmental Protection Agency (EPA)

Integrated Risk Information System (IRIS) icon

Office of Chemical Safety and Pollution Prevention (OCSPP) icon

Office of Drinking Water icon

U.S. Geological Survey (USGS) icon

U.S. Department of Agriculture (USDA)

Food Safety and Inspection Service icon

National Institutes of Health (NIH)

National Institute for Environmental Health Sciences (NIEHS) icon

National Toxicology Program (NTP) icon

14th Report on Carcinogens icon

National Library of Medicine (NLM), Toxicology Data Network icon

National Library of Medicine (NLM); MedlinePlus Health Topics: Poisoning, Toxicology, and Environmental Health icon

National Library of Medicine (NLM), Environmental Health and Toxicology, online Toxicology Tutorial icon

Professional and Academic Organizations

American Conference of Governmental Industrial Hygienists icon

Association of Public Health Laboratories icon/

Pediatric Environmental Health Specialty Units (PEHSUs) icon/

International Labour Organization

The EXtension TOXicology NETwork (EXTOXNET)

World Health Organization

International Programme on Chemical Safety (IPCS) icon

International Agency for Research on Cancer (IARC) icon

Page last reviewed: March 24, 2022