prostate-specific antigen test

Definition / 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. Increased levels of PSA may be a sign of prostate cancer.

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Find More About 'prostate-specific antigen test'

Source(s):

The Web site of the National Cancer Institute (http://www.cancer.gov/)

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