What is a PSA test?
The prostate-specific antigen test is a simple blood test used to evaluate the levels of the prostate-specific antigen (PSA) in a man’s blood
The prostate is a small, walnut-sized gland located just below the bladder in men. This gland helps contribute fluid to the semen, which helps sperm travel through the urethra and toward an unfertilized egg.
PSAs are protein cells that are produced by both cancerous and noncancerous tissue in the prostate. While PSAs are most prevalent in semen, small amounts of the protein cell circulate through the body via the bloodstream. Increased levels of PSA may indicate the presence of cancer cells in the prostate, or other conditions affecting the gland.