This test checks for prostate health and can help identify enlarged prostate and other inflammatory conditions in men. PSA (prostate-specific antigen) is a protein in blood that is often higher if you have prostate cancer, or if you have a non-cancerous condition like an enlarged prostate (benign prostatic hyperplasia) or inflammation of the prostate (prostatitis). This test can help identify these problems so you can make informed decisions about your health. The PSA test is for men aged 55-69 or those over 40 with certain risk factors, such as African-American men or men whose fathers, brothers, or sons have had prostate cancer. This test does not require fasting.