Prostate-Specific Antigen (PSA), Total and Free, Serum - Mayo . . . When total PSA concentration is above 10 0 ng mL, the probability of cancer is high and prostate biopsy is generally recommended The total PSA range of 4 0 to 10 0 ng mL has been described as a diagnostic "gray zone," in which the free PSA:total PSA ratio helps to determine the relative risk of prostate cancer (see table)
Benefits of PSA Free and Total Test vs. PSA Total Test Alone The PSA Free and Total test measures both the total PSA and the free, unbound portion of PSA in the blood This additional measurement helps differentiate between benign conditions like benign prostatic hyperplasia (BPH) and prostate cancer, especially when total PSA levels are in a borderline range (4-10 ng mL)
What is the Difference Between PSA and Free PSA? Protein-bound PSA ; Free PSA, or PSA that is not bound to other proteins in the blood; The ratio of free PSA to total PSA has recently become a more known indicator of the likelihood that prostate cancer is present If a man’s PSA level is considered “elevated” (between 4 ng ml and 10 ng ml) the free PSA test can be helpful in determining
PSA, % Free - Lab Results explained | HealthMatters. io Typically, men with prostate cancer have lower levels of free PSA relative to their total PSA because cancer tends to produce more bound PSA PSA, % FREE: This is the ratio of free PSA to total PSA, expressed as a percentage It is calculated by dividing the free PSA by the total PSA and multiplying by 100
Prostate Cancer Screening Tests | American Cancer Society One form is attached (“complexed”) to blood proteins, while the other circulates free (unattached) The percent-free PSA (%fPSA), also known as the free total PSA ratio (f t PSA), is the ratio of how much PSA circulates free compared to the total PSA level The percent-free PSA is lower in men who have prostate cancer than in men who do not
Prostate-Specific Antigen: PSA Test and PSA Levels Explained When your doctor initially tests your prostate-specific antigen (PSA), they look at the total amount of PSA in your blood 4Kscore, a test that measures total PSA, percent-free PSA, intact PSA