 |
|
|---|
The PSA test or prostate specific antigen test test tells your doctor the level of prostate specific antigen -- an enzyme made by the prostate -- in your blood.
http://www.prostatecancerweek.org
In a healthy male, the PSA should be less than 4 nanograms per milliliter of blood. Anything higher than 4 can indicate prostate cancer.
http://cancer.about.com
What is the prostate-specific antigen (PSA) test?
http://www.cancer.gov