PSA Level Basics: What Prostate-Specific Antigen Results Mean and How They Guide Treatment
Prostate-Specific Antigen (PSA) is a protein your prostate gland makes. Blood tests measure how much of this protein is present. Most healthy men have PSA in their blood at low levels. Experts watch PSA numbers to spot signs of prostate problems. In simple terms, higher levels can mean that something is happening in your [...]