A free PSA test measures the level of prostate-specific antigens that are not bound to other proteins in the blood. This test can help doctors to diagnose problems with the prostate, including cancer. In this article, we look at how a free PSA test differs from a total PSA test, and what the results can mean.
- Eduhealth: What is biceps tenodesis?
- Eduhealth: What to know about a Schatzki ring