PSA Density compares levels of Prostate-Specific Antigen (PSA) to the size of the prostateThe prostate is a walnut-sized gland located between the bla... Full Definition. This test can be performed from the same blood sample taken for an initial PSA test. It helps a doctor determine if a patient’s PSA level is actually elevated or just naturally high due to a larger prostate.
Who is this test best for?
Men with higher than normal PSA levels who have not yet been diagnosed with prostate cancer.
What to Expect
The PSA Density compares the PSA level against the size of the prostate. Larger prostate glands will produce higher amounts of PSA. An ultrasound technician will measure the size of the prostate using Transrectal Ultrasound (TRUS) imaging, which involves the insertion of a finger-sized probe into the rectum to capture an image of the organ.
Who orders or performs the test?
What are common side effects?
None