Skip to main content
U.S. flag

An official website of the United States government

Here’s how you know

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

HTTPS

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

    • Environmental Topics
    • Air
    • Bed Bugs
    • Cancer
    • Chemicals, Toxics, and Pesticide
    • Emergency Response
    • Environmental Information by Location
    • Health
    • Land, Waste, and Cleanup
    • Lead
    • Mold
    • Radon
    • Research
    • Science Topics
    • Water Topics
    • A-Z Topic Index
    • Laws & Regulations
    • By Business Sector
    • By Topic
    • Compliance
    • Enforcement
    • Laws and Executive Orders
    • Regulations
    • Report a Violation
    • Environmental Violations
    • Fraud, Waste or Abuse
    • About EPA
    • Our Mission and What We Do
    • Headquarters Offices
    • Regional Offices
    • Labs and Research Centers
    • Planning, Budget, and Results
    • Organization Chart
    • EPA History

Breadcrumb

  1. Home
  2. America's Children and the Environment (ACE)

ACE Biomonitoring

Biomonitoring refers to the measurement of chemicals in human bodies, such as in blood or urine. Measurements of pollutant levels in children's bodies provide information about their exposures to environmental contaminants. Measurements in women who may become pregnant or are currently pregnant or breastfeeding provide information about exposures that may affect their children.

The ACE biomonitoring section presents information on selected chemicals measured in the bodies of women of child-bearing age and children and addresses the following topics:

Lead

A naturally occurring metal used in the productions of fuels, paints, and a variety of other consumer products. The indicators are based on lead in children and stratified by race/ethnicity and income.

View Lead Indicators

Mercury

A naturally occurring element used in producing batteries, disinfectants, thermometers, dental amalgam fillings, and a variety of other consumer products. Mercury deposits from these sources can bioaccumulate up the aquatic food chain and be found at high concentrations in some fish. The indicator is based on mercury in women.

View Mercury Indicator

Cotinine

A marker of exposure to environmental tobacco smoke (or secondhand smoke). The indicators are based on cotinine in non-smoking children and cotinine in non-smoking women.

View Cotinine Indicators

Perfluorochemicals (PFCs)

A group of industrial chemicals used as surface coating for packaging products, cookware, carpets, and a variety of other consumer products. The indicator is based on PFCs in women. 

View PFCs Indicator

Polychlorinated Biphenyls (PCBs)

A group of industrial chemicals used historically as insulating fluids in capacitors, transformers, and other electrical equipment and as plasticizers in paints and a variety of other consumer products. The indicator is based on PCBs in women stratified by race/ethnicity and family income.

View PCBs Indicator

Polybrominated Diphenyl Ethers (PBDEs)

A group of industrial chemicals used as flame retardants in furniture, televisions, computers, and a variety of other consumer products. The indicator is based on PBDEs in women, stratified by race/ethnicity and family income.

View PBDEs Indicator

Phthalates

A group of industrial chemicals used to increase the flexibility of plastics in a wide array of consumer products. The indicators are based on phthalate metabolites in women and phthalate metabolites in children.

View Phthalates Indicators

Bisphenol A (BPA)

An industrial chemical used in the production of plastics and found in a variety of consumer products, most notably food and drink containers. The indicators are based on bisphenol A in women and bisphenol A in children.

View BPA Indicators

Perchlorate

A naturally occurring and man-made chemical used to manufacture fireworks, explosives, flares, and rocket fuel. The indicator is based on perchlorate in women.

View Perchlorate Indicator

America's Children and the Environment (ACE)

  • Basic Information
  • Key Findings
  • Frequent Questions
  • Environments and Contaminants
    • Criteria Air Pollutants
      • Data Tables - Environments and Contaminants - Criteria Air Pollutants
    • Hazardous Air Pollutants
      • Data Tables - Environments and Contaminants - Hazardous Air Pollutants
    • Indoor Environments
      • Data Tables - Environments and Contaminants - Indoor Environments
    • Drinking Water Contaminants
    • Chemicals in Food
      • Data Tables - Environments and Contaminants - Chemicals in Food
    • Contaminated Lands
    • Climate Change
  • Biomonitoring
    • Lead
      • Data Tables - Biomonitoring - Lead
    • Mercury
      • Data Tables - Biomonitoring - Mercury
    • Cotinine
      • Data Tables - Biomonitoring - Cotinine
    • Perfluorochemicals (PFCs)
      • Data Tables - Biomonitoring - Perfluorochemicals (PFCs)
    • Polychlorinated Biphenyls (PCBs)
      • Data Tables - Biomonitoring - Polychlorinated Biphenyls (PCBs)
    • Polybrominated Diphenyl Ethers (PBDEs)
      • Data Tables - Biomonitoring - Polybrominated Diphenyl Ethers (PBDEs)
    • Phthalates
      • Data Tables - Biomonitoring - Phthalates
    • Bisphenol A (BPA)
      • Data Tables - Biomonitoring - Bisphenol A
    • Perchlorate
      • Data Tables - Biomonitoring - Perchlorate
  • Health
    • Respiratory Diseases
      • Data Tables - Health - Respiratory Diseases
      • Metadata - National Hospital Ambulatory Medical Care Survey (NHAMCS)
      • Metadata - National Hospital Discharge Survey (NHDS)
    • Childhood Cancer
      • Data Tables - Health - Childhood Cancer
      • Metadata - Surveillance, Epidemiology, and End Results (SEER) Program
    • Neurodevelopmental Disorders
      • Data Tables - Health - Neurodevelopmental Disorders
    • Obesity
      • Data Tables - Health - Obesity
    • Adverse Birth Outcomes
      • Data Tables - Health - Adverse Birth Outcomes
  • Supplementary Topics
    • Birth Defects
      • Data Tables - Supplementary Topics - Birth Defects
      • Metadata - Texas Birth Defects Registry
    • Contaminants in Schools and Child Care Facilities
      • Data Tables - Supplementary Topics - Contaminants in Schools and Child Care Facilities
      • Metadata - California School Pesticide Use Reporting Database
  • Multimedia Resources and Publications
  • Review Documents
    • Biomonitoring
    • Environments and Contaminants
    • Health
    • Special Features
  • Related Topics and Links
Contact Us About America's Children and the Environment
Contact Us to ask a question, provide feedback, or report a problem.
Last updated on March 27, 2025
  • Assistance
  • Spanish
  • Arabic
  • Chinese (simplified)
  • Chinese (traditional)
  • French
  • Haitian Creole
  • Korean
  • Portuguese
  • Russian
  • Tagalog
  • Vietnamese
United States Environmental Protection Agency

Discover.

  • Accessibility Statement
  • Budget & Performance
  • Contracting
  • EPA www Web Snapshot
  • Grants
  • No FEAR Act Data
  • Plain Writing
  • Privacy
  • Privacy and Security Notice

Connect.

  • Data
  • Inspector General
  • Jobs
  • Newsroom
  • Regulations.gov
  • Subscribe
  • USA.gov
  • White House

Ask.

  • Contact EPA
  • EPA Disclaimers
  • Hotlines
  • FOIA Requests
  • Frequent Questions
  • Site Feedback

Follow.