Elevated PSA

A prostate-specific antigen (PSA) test measures the level of PSA in the blood to screen for prostate cancer. PSA is a substance made mostly by the prostate that may be found in an increased amount in the blood of men who have prostate cancer. While an elevated PSA may be a sign of prostate cancer, PSA levels can also be high in men who have an infection or inflammation of the prostate or benign prostatic hyperplasia (BPH is an enlarged, but noncancerous, prostate).