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Men's Health

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Prostate-Specific Antigen (PSA)

A prostate-specific antigen (PSA) test measures the amount of prostate-specific antigen in the blood. PSA is released into a man's blood by his prostate gland camera.gif. Healthy men have low amounts of PSA in the blood. The amount of PSA in the blood normally increases as a man's prostate enlarges with age. PSA may increase because of inflammation of the prostate gland (prostatitis) or prostate cancer. An injury, a digital rectal exam, or sexual activity (ejaculation) may also briefly raise PSA levels.

dplink.gif Prostate Cancer Screening: Should I Have a PSA Test?

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Why It Is Done

The prostate-specific antigen (PSA) test is done to:

1 | 2 | 3 | 4 | 5

WebMD Medical Reference from Healthwise

Last Updated: November 14, 2014
This information is not intended to replace the advice of a doctor. Healthwise disclaims any liability for the decisions you make based on this information.

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