What Is Prostate-Specific Antigen? Your prostate is a gland that makes seminal fluid, which nourishes and transports your sperm when you ejaculate. It's about the size of a walnut and surrounds your ...

Prostate-specific antigen (PSA) is a protein that is secreted by the cells of the prostate gland and is found in semen, the medium that carries sperm. PSA is the substance that liquefies semen, ...

A prostate exam can help your doctor diagnose an enlarged or inflamed prostate. It can also help raise the suspicion of prostate cancer, which is a common form of cancer among Americans. Your prostate ...

are aged 50 and over and have asked your GP for a test Doctors also check your PSA level as you go through prostate cancer treatment. It can help them see how well treatment is working. Prostate ...