A free prostate-specific antigen (PSA) test is used to confirm test results from a PSA test. A

PSA test is used to see if you may have prostate cancer. The test measures the level of PSA in

your blood. If your levels are high, you may have a condition that’s not serious, such as a

prostate that’s enlarged or inflamed prostate, or you might have prostate cancer. A free PSA

test may be used instead of a biopsy to rule out prostate cancer, though you may still need a

biopsy if your free PSA test results indicate a risk of cancer.