immunoassay

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Related to immunoassays: ELISA, Enzyme immunoassay

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 ?
This report mentions various factors that are causative of fast-paced expansion of the Immunoassays in R&Dmarket.
Of the 3414 samples submitted for opiate testing, 2191 tested positive using immunoassay and 2233 tested positive using LC-MS for a total of 42 false-negative results with immunoassay.
Most automated immunoassays are based on two major assay designs: the sandwich format and the competitive format.
On the automated immunoassay analyzer, the blood extract is analyzed in a series of 9 steps.
According to the study published in the journals Nanotechnology and Analytical Chemistry, the enhanced performance of immunoassay could help improve the detection limit of disorders such as cancer and Alzheimer's disease as the test would require 3 million times less biomarkers for the disease to be detected.
The breakthrough involves a common biological test called an immunoassay, which mimics the action of the immune system to detect the presence of biomarkers -- the chemicals associated with diseases.
DBI is driving the widespread adoption of protein biomarker analysis with the first automated, multiplex immunoassay system that can be used in real-time by virtually anyone, anywhere in drug development, clinical trials and diagnostics.
Nelson shockingly show that these immunoassays are just glorified [T.sub.4] tests and can be very misleading," Dr.
The reference method isn't practical for clinical laboratories, and operates very differently than the immunoassays, so it probably won't help improve the current assays, Dr.
Serological cross-reactivities between antibodies to simian virus 40, BK virus, JC virus assessed by virus-like-particle-based enzyme immunoassays. Clin Diagn Lab Immunol.
"We are enthusiastic about our new partnership with Compugen and the opportunity to develop immunoassays for these novel proteins," said Dr.