Radioimmunoassay
[rey-dee-oh-im-yuh-noh-as-ey, -a-sey, -i-myoo-] /ˌreɪ di oʊˌɪm yə noʊˈæs eɪ, -æˈseɪ, -ɪˌmyu-/
noun
1.
a test procedure that integrates immunologic and radiolabeling techniques to measure minute quantities of a substance, as a protein, hormone, or drug, in a given sample of body fluid or tissue.
/ˈreɪdɪəʊˌɪmjʊnəʊˈæseɪ/
noun
1.
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 ra·di·o·im·mu·no·as·say (rā’dē-ō-ĭm’yə-nō-ās’ā, -ĭ-myōō’-)
n.
Abbr. RIA
The immunoassay of a substance, such as a hormone or an enzyme that has been radiolabeled.
radioimmunoassay
(rā’dē-ō-ĭm’yə-nō-ās’ā, -ĭm-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 immunoassay, tracer.
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