radioiodination

https://doi.org/10.1351/goldbook.R05107
The process of incorporating the radionuclides of iodine (usually $\ce{^{125}I}$, $\ce{^{131}I}$ or $\ce{^{123}I}$) into, or of covalently linking a radioiodinated substance to, a substance.
Source:
PAC, 1994, 66, 2513. (Nomenclature for radioanalytical chemistry (IUPAC Recommendations 1994)) on page 2524 [Terms] [Paper]