You may want to do a PSE blood test. It claims 94% accuracy and its purpose is to tell you whether you are likely... or unlikely to have prostate cancer. It can also help you and your doctor decide whether a biopsy is required. The test is from Oxford Biodynamics. The VP of Diagnostics is/was Joe Abdo. His email is joe.abdo@oxfordbiodynamics.com. Not sure he is still there but there are several people there that will take phone calls as well so you can ask questions.