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A 28-year-old male asked:

What is the definition or description of: prostate specific antigen?

2 doctor answers3 doctors weighed in
Dr. Darren Mack
Urology 14 years experience
A protein: Psa is a protein made in the prostate gland that functions to liquefy sperm. It is a serine protease made by both normal and malignant prostate glands. Commonly used as a screening test for prostate cancer, the psa test is widely used to detect which men would benefit from a prostate biopsy as well as detect cancer recurrence in men who have been treated for prostate cancer.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Alok Agrawal
36 years experience
Blood test: Prostate-specific antigen, or psa, is a protein produced by cells of the prostate gland. The psa test measures the level of psa in a man’s blood. Level of psa is often elevated in men with prostate cancer.
Created for people with ongoing healthcare needs but benefits everyone.

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Last updated Jan 18, 2014
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