In analytical chemistry,<unk>  is the measurement of the body burden of toxic chemical compounds, elements, or their metabolites, in biological substances. Often, these measurements are done in blood and urine.<unk>  is performed in both environmental health, and in occupational safety and health as a means of exposure assessment and workplace health surveillance. The two best established environmental<unk>  programs in representative samples of the general population are those of the United States and Germany, although population-based programs exist in a few other countries. In 2001, the U.S. Centers for Disease Control and Prevention (CDC) began to publish its biennial National Report on Human Exposure to Environmental Chemicals, which reports a statistically representative sample of the U.S. population.
Biomonitoring
Eurosurveillance
Pharmacomicrobiomics
Disease surveillance
Sentinel surveillance
Molecular risk assessment
Risk panel
Triage