radioimmunoassay technique

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• Radioimmunoassay — (RIA) is a scientific method used to test antigens (for example, hormone levels in the blood) without the need to use a bioassay. It was developed by Rosalyn Yalow and Solomon Aaron Berson in the 1950s. [Yalow RS, Berson SA. Immunoassay of… …   Wikipedia

• radioimmunoassay — ☆ radioimmunoassay [rā′dē ōim΄yoo nō as′ā, rā′dē ō im΄yoo nōa sā′ ] n. the technique of immunoassay in which radioactive tracers are introduced into the substance to be analyzed …   English World dictionary

• Radioimmunoassay — A very sensitive, specific laboratory test (assay) using radiolabeled (and unlabeled) substances in an immunological (antibody antigen) reaction. * * * An immunologic (immunochemical) procedure that uses the competition between radioisotope… …   Medical dictionary

• radioimmunoassay — n. a technique using radioactive antibodies as tracers to estimate the levels of natural substances in a blood sample. The antibodies bind to antigens, and the amount of radioactivity trapped is a measure of the amount of the target antigen… …   The new mediacal dictionary

• radioimmunoassay — (RIA; ra de o im u no as a) A very sensitive assay technique that uses a purified radioisotope labeled antigen or antibody to compete for antibody or antigen with unlabeled standard and samples to determine the concentration of a substance in the …   Dictionary of microbiology

• radioimmunoassay — noun Medicine a technique for measuring antibody levels using radioactively labelled antigens …   English new terms dictionary

• radioallergosorbent — ra·dio·al·ler·go·sor·bent ə .lər gō sȯr bənt adj relating to, involving, or being a radioallergosorbent test * * * ra·dio·al·ler·go·sor·bent (ra″de o al″ər go sorґbənt) denoting a radioimmunoassay technique for the… …   Medical dictionary

• radioimmunosorbent — ra·dio·im·mu·no·sor·bent (ra″de o im″u no sorґbənt) denoting a radioimmunoassay technique for measuring IgE in samples of serum; see under tests …   Medical dictionary

• ELISA — Enzyme Linked ImmunoSorbent Assay, also called ELISA, Enzyme ImmunoAssay or EIA, is a biochemical technique used mainly in immunology to detect the presence of an antibody or an antigen in a sample. The ELISA has been used as a diagnostic tool in …   Wikipedia

• immunoassay — Detection and assay of substances by serological (immunological) 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… …   Medical dictionary

• test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary