MedicalTerminology DB
General Medical Terms

affinity reagent

Meaning of affinity reagent: In chemistry and biology, a compound that binds specific substances, such as proteins or nucleic acids.

Definition of affinity reagent

In chemistry and biology, a compound that binds specific substances, such as proteins or nucleic acids. Many affinity reagents are antibodies. They are used to analyze tissue samples to help diagnose diseases.

Written and maintained by James Murray Last updated July 21, 2026 Educational reference, not medical advice. Read the limitations.

For learning, not diagnosis. This glossary provides general educational information and is not a substitute for advice from a qualified healthcare professional. If you may be experiencing a medical emergency, contact local emergency services.