Prostate health in men is a commonly missed problem and often goes undetected if not checked. Prostate cancer is the most common type of cancer amongst men. Prostate Specific Antigen (PSA) is a common indicator of prostate cancer and abnormal levels would warrant further investigation. This test covers: Free Prostate Specific Antigen (PSA), Free: Total PSA Ratio, Prostate Specific Antigen (PSA).