MedicalTerminology DB

Meaning of prostate-specific antigen test: A blood test that measures the level of prostate-specific antigen (PSA), a substance produced by the prostate and some other tissues in the body.

Definition of prostate-specific antigen test

A blood test that measures the level of prostate-specific antigen (PSA), a substance produced by the prostate and some other tissues in the body. Increased levels of PSA may be a sign of prostate cancer.

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.