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[im-yuh-noh-uh-sey, -as-ey, ih-myoo-] /ˌɪm yə noʊ əˈseɪ, -ˈæs eɪ, ɪˌmyu-/
any laboratory method for detecting a substance by using an antibody reactive with it.
Origin of immunoassay
1955-60; immuno- + assay
Related forms
immunoassayable, adjective Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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British Dictionary definitions for immunoassay


(immunol) a technique of identifying a substance by its ability to bind to an antibody
Derived Forms
immunoassayist, noun
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
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immunoassay in Medicine

immunoassay im·mu·no·as·say (ĭm'yə-nō-ās'ā, ĭ-myōō'-)
A laboratory or clinical technique that uses the specific binding between an antigen and its homologous antibody to identify and quantify a substance in a sample. Also called immunochemical assay.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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immunoassay in Science
  (ĭm'yə-nō-ās'ā, ĭ-my'-)   
A laboratory technique that identifies and quantifies (usually in minute amounts) a protein such as a hormone or an enzyme, based on its ability to act as an antigen or antibody in a chemical reaction.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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