immunoassay

immunoassay /im·mu·no·as·say/ (-as´a) quantitative determination of antigenic substances (e.g., hormones, drugs, vitamins) by serological means, as by immunofluorescent techniques, radioimmunoassay, etc.

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im·mu·no·as·say (my-n-s, -my-)

n.

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.

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immunoassay

[im′yənō·as′ā]

Etymology: L, immunis + Fr, essayer, to try

a competitive-binding assay in which the binding protein is an antibody.

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immunoassay [im″u-no-as´a]

any of several methods for the quantitative determination of chemical substances, such as hormones, drugs, and specific proteins, that utilize the highly specific binding between an antigen or hapten and homologous antibodies, including radioimmunoassay, enzyme immunoassay, and fluoroimmunoassay.

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immunoassay (im´ūnōas´ā),

n a competitive-binding assay in which the binding protein is an antibody.

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immunoassay

the quantitative determination of either antibody or antigen, e.g. hormones, drugs, vitamins, and specific proteins, by means of antigen-antibody interaction, as by agglutination, precipitation, ELISA, radioimmunoassay, etc.

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immunoassay

Lab medicine Any assay that measures an antigen-antibody response, the sensitivity of which varies according to the method; an immunologic test that quantifies a particular antigen using a cognate antibody. See ELISA, RIA.