The only "tests" I had to have were the pre op bloodwork and a EKG, its so the anisteologist can release you as safe for surgery, now prior to that you will be given the usual Q&A about your general health and habits, they will take your measurements and generally get a feel for whats happening and what you may need to do before surgery, many times people are asked to go on some sort of diet to lose a few pounds to show commitment and such. It all starts with making the appt, DO IT, you cant know if you dont go!!! Good Luck