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.

Origin of radioimmunoassay

1
First recorded in 1960–65; radio- + immunoassay

Words Nearby radioimmunoassay

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British Dictionary definitions for radioimmunoassay

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for radioimmunoassay

radioimmunoassay

[ rā′dē-ō-ĭm′yə-nō-ăsā, -ĭm-yōō′- ]


  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. See also immunoassay tracer.

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