@mmoss I received the first appointment within the month of the referral.. a couple weeks really.. I also knew someone who's husband had been on Mayo MN Staff.. I did not ask if she had helped.. I was on Medicare and a good United Health Care Gap insurance through my academic retirement.. The main test that determined my problem was eating a standardized breakfast meal with a radioactive tracer .. and then doing x-rays every hour after for 4 hours... It showed the slow rate of my digestive system.. so that set limits for me.. they also did esophagus tests.. My local clinic kept doing the same test over and over... which didn't work every time.. duh.. Mayo tests were different than any I had before.. the names have escaped me.. Does your clinic in South FL use the Epic Medical Records system..? If they do, that is the same records system used by Mayo ... and they could refer to your multitude of tests easily... then make a judgement based on those tests..