This article was reviewed by Darragh O’Carroll, MD. PSA and Testosterone: Are They Linked? Prostate-specific antigen (PSA) is ...

Same card, same grade, different grading label? It's become enough to alter the overall value on the secondary market.

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 ...

THIS YEAR, IT’S estimated that nearly 300,000 new prostate cancer cases will be diagnosed. While there’s no single test to detect prostate cancer, doctors commonly use the prostate-specific antigen ...

A 1961-62 Fleer Wilt Chamberlain rookie card has been downgraded from a Gem Mint 10 to a Mint 9 by PSA. The difference in ...