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What is PSA (prostate specific antigen)?

April 26, 2017antigen prostate psa psa blood test psa test psa testing

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What is PSA (prostate specific antigen)?

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Prostate specific antigen (PSA) is an enzyme produced only by the prostate gland. The prostate gland is a doughnut-shaped gland located in a man’s pelvis in the small space between the base of the penis and the bladder. The prostate makes the fluid that nourishes sperm and carries sperm during ejaculation. The amount of PSA produced by the prostate gland can be helpful in detecting prostate cancer very early.