Blood Test Predicts Prostate Cancer Riskhttp://articles.mercola.com/sites/articles/archive/2008/01/02/prostate-cancer-predictive-blood-test.aspxCurrently, prostate cancer risk in middle-aged and older men is partly determined by a blood test for total prostate-specific antigen (PSA). A new test also measures blood PSA, but only the percentage of PSA that is "free" or not bound to otherenCommunityServer 2008.5 SP1 (Build: 31106.3070)