Test Description: Prostate Specific Antigen (Free PSA)

The Free Prostate Specific Antigen (Free PSA) test measures the amount of PSA in the blood that is not bound to other proteins. PSA is a protein produced by the prostate gland, and elevated levels can indicate prostate conditions, including benign prostatic hyperplasia (BPH) or prostate cancer. The Free PSA test is often used in conjunction with total PSA levels to help differentiate between benign and malignant prostate conditions. A lower ratio of free PSA to total PSA may suggest a higher likelihood of prostate cancer, helping guide further diagnostic procedures like a biopsy.