Educational Content: This article is for informational purposes only and does not constitute medical advice. Always consult a healthcare provider for diagnosis and treatment.
Definition of Radioimmunoassay
Medically reviewed by Dr. Otari Nergadze, Neurosurgeon | Updated: January 2026
Radioimmunoassay: A very sensitive, specific laboratory test (assay) that uses radiolabeled and unlabeled substances in an immunological (antibody-antigen) reaction.