Normal PSA Levels by Age: A Valid Way to Assess Prostate Cancer Risk?

Can we count on normal PSA levels by age? Regardless of any PSA reference range for different age groups, there’s actually no ‘normal’ prostate-specific antigen level that guarantees you’re free from prostate cancer. Other than the fact that prostate-specific antigen (PSA) screening is a simple blood test, little else about this cornerstone of prostate cancer…