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Biomonitoring Biological Monitoring

Biological monitoring means testing for the presence of a hazardous substance, its metabolites (by-products) or a biochemical change in a person’s biological materials (e.g. body tissue, blood, urine, breath) to determine how much chemical has entered the body following exposure. For example, lead is often measured in blood, mercury can be measured from a urine sample, cadmium exposure has been tested from hair and fingernails, and alcohol can be detected in exhaled breath.
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