Adna is a new blood test that will tell you if Zytiga and Xtandi will or will not treat castration resistant prostate cancer. Imagine knowing if Zytiga and or Xtandi will fail to help you, before you spend months of time and thousands of dollars trying these drugs out. The test, called AdnaTest Prostate Cancer Panel … Continue reading Blood Test Determines Effectiveness of Zytiga and or Xtandi, Before You Begin Treatment.