Prostate specific antigen (PSA) is a protein produced primarily by cells in the prostate, a small gland that encircles the urethra in males and produces a fluid that makes up part of semen. Most of the PSA that the prostate produces is released into this fluid, but small amounts of it are also released into the bloodstream. This test measures the amount of PSA in the blood.
PSA is not diagnostic of cancer. This test is used to screen men for prostate cancer and to help determine the necessity for a biopsy of the prostate. This test can also be used to monitor the effectiveness of treatment for prostate cancer, and/or to detect recurrence of prostate cancer.
CPT Code: 84153
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