competitive radioimmunoassay

См. также в других словарях:

• competitive protein-binding assay — a radioimmunoassay in which labeled and unlabeled ligands compete for sites on a carrier that has the same avidity for both; the concentration of unlabeled ligand is inversely proportional to the amount of labeled ligand bound …   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

• Assay — An assay is an analysis done to determine: {{}}The presence of a substance and the amount of that substance. Thus, an assay may be done for example to determine the level of thyroid hormones in the blood of a person suspected of being hypothyroid …   Medical dictionary

• 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

• Immunoassay — An immunoassay is a biochemical test that measures the concentration of a substance in a biological liquid, typically serum or urine, using the reaction of an antibody or antibodies to its antigen. The assay takes advantage of the specific… …   Wikipedia

• 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

• ligand — 1. Any individual atom, group, or molecule attached to a central metal ion by multiple coordinate bonds; e.g., the porphyrin portion of heme, the corrin nucleus of the B12 vitamins. 2. An …   Medical dictionary

• radioligand assay — any assay procedure that uses radioisotopic labeling and biologically specific binding of reagents, such as a radioimmunoassay, competitive protein binding assay, or radioreceptor assay …   Medical dictionary