The prostate-specific antigen (PSA) test is a blood screen for prostate cancer.

Prostate Specific Antigen (PSA) is found in the blood stream. It is measured to detect possible prostate problems.

My prostate specific serum is 5.3.

psa

Prostate-specific-antigen tests are done to gauge the amount of prostate-specific antigens in the bloodstream. In healthy young males, the PSA count is low, but the amount of PSA in the bloodstream slowly increases with age as the prostate becomes enlarged.