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A sensitive immunoassay that uses an enzyme linked to an antibody or antigen as a marker for the detection of a specific protein, especially an antigen or antibody. It is often used as a diagnostic test to determine exposure to a particular infectious agent, such as the AIDS virus, by identifying antibodies present in a blood sample.
[e(nzyme)-l(inked) i(mmunoad)s(orbent) a(ssay).]
n acronym for
(Biochemistry) enzyme-linked immunosorbent assay: an immunological technique for accurately measuring the amount of a substance, for example in a blood sample
ELISA(ɪˈlaɪ zə, -sə)
a diagnostic test for detecting exposure to an infectious agent, as the AIDS virus, by combining a blood sample with antigen of the agent and probing with an enzyme that causes a color change when antibody to the infection is present in the sample.
[1985–90; e(nzyme-)l(inked) i(mmuno)s(orbent) a(ssay)]
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|Noun||1.||ELISA - an assay that relies on an enzymatic conversion reaction and is used to detect the presence of specific substances (such as enzymes or viruses or antibodies or bacteria)|
assay - a quantitative or qualitative test of a substance (especially an ore or a drug) to determine its components; frequently used to test for the presence or concentration of infectious agents or antibodies etc.