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radioimmunoassay

[ rey-dee-oh-im-yuh-noh-as-ey, -a-sey, -i-myoo- ]

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.


radioimmunoassay

/ 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

/ rā′dē-ō-ĭm′yə-nō-ăsā,-ĭm-yo̅o̅′- /

  1. An immunoassay in which the substance to be identified or quantified is labelled with a radioactive substance (called a tracer ), such as an ion.
  2. See also immunoassay


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Word History and Origins

Origin of radioimmunoassay1

First recorded in 1960–65; radio- + immunoassay

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radio horizonradioimmunology