@jlharsh My GI wants to wait until all tests are in, which makes sense. I had the Abdominal CT last week and the results show nothing but a couple of areas of diverticulosis. The Endo with US and colonoscopy are the middle of June. I had to wait to schedule to get clearance from my new EP cardiologist. I had an episode of afib with rvr and coding in recovery after a recent total hip replacement. I have to go ahead to do the next tests. Thanks for the Mayo article. My GI only stated in the SIBO report that high methane is due to constipation. I am not constipated at all.