the technique of immunoassay in which radioactive tracers are introduced into the substance to be analyzed
A technique used to quantitate minute amounts of a substance, such as a hormone, in blood or another liquid. It involves the use of radioisotopes and of antibodies to the substance being investigated.
(plural radioimmunoassays) (abbreviated as RIA)
(third-person singular simple present radioimmunoassays, present participle radioimmunoassaying, simple past and past participle radioimmunoassayed)
- To assay by this process.
radio- +"Ž immunoassay