R.i.a.() -

: It uses competitive binding , where a known amount of radiolabeled antigen competes with unlabeled antigen from a patient's sample for a limited number of antibody binding sites.

The acronym most commonly refers to Radioimmunoassay , a highly sensitive laboratory technique used to measure concentrations of substances like hormones or vitamins. However, depending on the context, it can also represent financial, regulatory, or technical terms. 1. Radioimmunoassay (Science & Medicine) R.I.A.()

Developed in the late 1950s by Solomon Berson and Rosalyn Yalow, RIA revolutionized medical diagnostics by allowing the measurement of minute quantities of antigens (like insulin) in the blood. : It uses competitive binding , where a