 Some patients will not have the serum collection at visits 1, 2, and 4. The patients will be notified as to whether or not their blood will be drawn during the visits. Pre-operative Digital Rectal Exam, urinary catheterization and blood draws are part of standard of care in this patient population with localized prostate cancer. The catheter will be inserted during the time of surgery preparation in the operating room and removed during the post operative clinic appointment. 