
Understanding PSA Levels & The PSA Test | HALO Dx
10/27/20 12:10 PM
The prostate is a walnut-sized gland found between the bladder and the rectum in males. Its primary job is to produce seminal fluid. The prostate creates a protein, the prostate-specific antigen, or PSA. A PSA screening test is a blood test approved by the FDA in 1994 to measure the levels of PSA in a man’s blood.