immunoassay

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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.

im·mu·no·as·say

(im'yū-nō-as'ā, im-yū'nō),
Detection and assay of substances by serologic (immunologic) methods; in most applications the substance in question serves as antigen, both in antibody production and in measurement of antibody by the test substance.
See also: enzyme-linked immunosorbent assay, radioimmunoassay, radioimmunoelectrophoresis, immunologic pregnancy test.

immunoassay

(ĭm′yə-nō-ăs′ā, ĭ-myo͞o′-)
n.
A laboratory technique that identifies and quantifies a protein, such as a hormone or an enzyme, based on its ability to act as an antigen or antibody in a chemical reaction.

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.

im·mu·no·as·say

(im'yū-nō-as'ā)
Detection and assay of substances by serologic (immunologic) methods.
See also: radioimmunoassay, radioimmunoelectrophoresis, immunologic pregnancy test
Synonym(s): immunochemical assay.

immunoassay

A method of testing for, and measuring the concentration of, various antibodies. Various methods, including RADIOIMMUNOASSAY, enzyme linked immunosorbent assay (ELISA) and immunoelectrophoresis may be used.

immunoassay

an assay of a substance that is based on its reaction with a specific ANTIBODY. See, for example, ELISA.

im·mu·no·as·say

(im'yū-nō-as'ā)
Detection and assay of substances by serologic (immunologic) methods; in most applications substance in question serves as antigen, both in antibody production and in measurement of antibody by the test substance.
References in periodicals archive ?
Immunochemical assays are very effective for measuring heat-shock response in a variety of molluscs (Hofmann and Somero, 1995; Dahlhoff et al., 2001; Tomanek and Sanford, 2003; Sorte and Hofmann, 2005), but they may be a less effective measurement method in the crustacean B.
Polystyrene is widely used as the support material in immunochemical assays such as ELISA.
This method provided detection limits between 1 and 50 [micro]g/L (i.e., low enough to verify positive results obtained with immunochemical assays) for the 23 compounds.
Panels of sera in which the content of one or several analytes has been determined by a definitive method have been prepared for many chemical and some immunochemical assays. These secondary standards are called SRMs by the NIST and Certified Reference Materials by the Institute for Reference Materials and Measurements (IRMM) (12).
Recombinant heart type fatty acid binding protein as standard in immunochemical assays. Clin Chem Lab Med 1998;36:283-8.
Two ELISA systems and RIA used a monoclonal apo(a) detection antibody, and the 31 other immunochemical assays used polyclonal antibodies specific for apo(a).