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

Over the past two months, the prices for Lionel Messi’s rookie card have surged at an unprecedented rate. His 2004 Panini Sports Mega Cracks PSA 10 (population of 20) had never sold publicly for more ...

Earlier this year, the record for the most expensive Charizard card of all time was set by an earlier Japanese “No Rarity” ...