[radiolabeled compounds; when a stable compound has an element replaced with a radioisotope it becomes radiolabeled; denotes the use of a radioisotope that is used to follow the metabolism, synthesis or route of a specific element or to study a biological process such as transport, immunological mechanisms, or cell divisions; index specific element that is being tagged. ( CSP )]
UMLS (CSP) C0597354 - Indicator, Reagent, or Diagnostic Aid
Relation/PAR: reagent/indicator
Relation/CHD: radionuclide double label