Biomonitoring is a way to measure the chemicals in a person’s body. Scientists take samples of
people’s blood and urine and measure the chemicals that are present. These measurements help us determine if a person has been exposed to harmful chemicals.
What we learn from biomonitoring studies can be used to help keep harmful chemicals out of our
environment and the products we buy.
The Exposure Assessment Section provides expertise in study design, exposure assessment, epidemiology, and health communication to the state's biomonitoring program. Biomonitoring California is a joint effort of the Department of Public Health, the Office of Environmental Health Hazard Assessment, and the Department of Toxic Substances Control.