One important substance that is produced by the prostate Antigen may be the PSA or the Prostate Gland Antige. This substance is commonly based in the semen but a small quantity could have leaked in our bloodstream. A blood test can be done to determine the amount of PSA in our bloodstream. It is usually measured in nanograms for each millimeter of blood. Males with normal prostate will have fewer than 4 nanograms, higher than this particular reading would mean having a cancer of the prostate. (more…)