Indicator signaling an event or condition in a biological system
or sample and giving a measure of exposure, effect, or susceptibility.
As related to biomonitoring, a biomarker is the presence of any
substance, or a change in any biological structure or process that can
be measured as a result of exposure. Many biomonitoring studies focus on
chemical substances or their metabolites as biomarkers.
Parameter that can be used to identify an effect in an individual
organism and can be used in extrapolation between species for risk
assessment.
