PSA Levels: Why Doctors Look Beyond the 4.0 Cutoff
By Rodney Herbert Prostate cancer screening often uses a blood test called PSA (prostate-specific antigen). For many years, doctors followed a simple rule: if a man's PSA was above 4.0, it was a red flag, and if it was below 4.0, it was considered normal. Today we know it’s not that simple. In this [...]
