Home Tests Prostatic Specific Ag - Free (FPSA)

Prostatic Specific Ag - Free (FPSA)

The PSA test is a blood test used primarily to screen for prostate cancer. The test measures the amount of prostate-specific antigen (PSA) in your blood. PSA is a protein produced by both cancerous and noncancerous tissue in the prostate, a small gland that sits below the bladder in males.