radioimmunoassay

https://doi.org/10.1351/goldbook.R05105
An @A00470@ based on the reversible and non-covalent binding of an @A00394@ (@H02738@) by a specific @A00384@ employing @R05092@ labelled @A00394@ (@H02738@) to measure the fraction of the @A00394@ (@H02738@) bound to a substoichiometric amount of @A00384@.
Source:
PAC, 1994, 66, 2513. (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2524 [Terms] [Paper]