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radioimmunoassay

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Also known as Gamma emiting isotope i125.

A radioimmunoassay (RIA) is an immunoassay that uses radiolabeled molecules in a stepwise formation of immune complexes. A RIA is a very sensitive in vitro assay technique used to measure concentrations of substances, usually measuring antigen concentrations (for example, hormone levels in blood) by use of antibodies.

Key facts

Medical intervention.Image
Radioimmunoassay process.png
Medical intervention.MeshID
D011863
Medical intervention.Name
Radioimmunoassay

via Wikipedia infobox

Research

100,096 papers

via PubMed

~4 min read

Encyclopedic overview

4 sections
Contents
  • Method
  • History
  • References
  • External links

A radioimmunoassay (RIA) is an immunoassay that uses radiolabeled molecules in a stepwise formation of immune complexes. A RIA is a very sensitive in vitro assay technique used to measure concentrations of substances, usually measuring antigen concentrations (for example, hormone levels in blood) by use of antibodies.

The RIA technique is extremely sensitive and extremely specific, and although it requires specialized equipment, it remains among the least expensive methods to perform such measurements. It requires special precautions and licensing, since radioactive substances are used.

Excerpted from Wikipedia’s “radioimmunoassay” article, available under the CC BY-SA 4.0 licence.