a measurable indicator of a biological state, process, or response to an exposure or intervention. Biomarkers can reflect normal or pathological processes or the effects of treatment. They are used in research and clinical practice to detect disease, monitor its progression, predict outcomes, and guide therapeutic decisions.
Synonyms: Biomarker, Clinical Marker, Diagnostic Indicator, Biological Indicator
Example
In rheumatoid arthritis research, C-reactive protein (CRP) levels in the blood are often used as a biological marker of inflammation to assess disease activity and response to therapy.