Diagnostic Blood Test:

Prostate Specific Antigen (PSA) (Reflex to Free)
If PSA is between 4 and 10 ng/mL reflex testing to PSA, Free is performed.

Prostate-Specific Antigen (PSA) is a protein produced by the prostate. Elevations of PSA are a marker of prostate cancer or another prostate problem such as prostatitis or benign prostatic hyperplasia (BPH). High PSA levels may indicate the need for re-testing, a prostate exam, or potentially a biopsy.

Free PSA is a measure of unbound PSA that is available to the body’s tissues.