antigen-binding radioimmunoassay

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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

• Ouchterlony double immunodiffusion — Picture of an Ouchterlony double immunodiffusion plate, after immunodiffusion has taken place. In this, titre value of an antigen is quantified. The central well has an antibody, and the surrounding wells have decreasing concentration of the… …   Wikipedia

• 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

• 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

• 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

• Immunoprecipitation — (IP) is the technique of precipitating a protein antigen out of solution using an antibody that specifically binds to that particular protein. This process can be used to isolate and concentrate a particular protein from a sample containing many… …   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

• Medizinische Abkürzungen — Dies ist eine Liste der Abkürzungen und Akronyme, die in der klinischen Medizin verwendet werden. Anatomische Akronyme werden von den Lemmata Nomenklatur (Anatomie) sowie Lage und Richtungsbezeichnungen abgedeckt. weitere Links zu medizinischen… …   Deutsch Wikipedia

• 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

• Precipitin — A precipitin is an antibody which can precipitate out of a solution. The Precipitin Reaction The precipitin reaction provided the first quantitative assay for antibody but is now made redundant by current technology and diagnostic techniques such …   Wikipedia