ra·di·o·im·mu·no·as·say (r  d - - my -n- s , -m-y -)n. Abbr. RIA A procedure that measures minute amounts of a substance, such as a hormone or drug, by quantitating the binding, or the inhibition of binding, of a radiolabeled substance to an antibody. |
radioimmunoassay [ˈreɪdɪəʊˌɪmjʊnəʊˈæseɪ]
n
(Medicine) a sensitive immunological assay, making use of antibodies and radioactive labelling, for the detection and quantification of biologically important substances, such as hormone concentrations in the blood
| radioimmunoassay (rd--my-n-s, -m-y-) An immunoassay in which the substance to be identified or quantified is labelled with a radioactive substance (called a tracer), such as an ion. See also immunoassaytracer |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | radioimmunoassay - immunoassay of a substance that has been radioactively labeled immunoassay, immunochemical assay - identification of a substance (especially a protein) by its action as an antigen; "PSA in the blood can be measured with an immunochemical assay" |
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