Hello thanks that sounds like a very useful test. From what I read it can test for SIBO, lactose malabsoption and fructose malabsorpiton though I think you have to do each test separately. I doubt my family doctors office does that, maybe a gsstroenterologist though I think it's done at the hospital, I don't know and I'm not sure every clinic would have one. I'm wondering have any of you guys ever had the hydrogen breath test to test for these 3 conditions and if so, was it one at a time or did you get to test for all three on the same visit? Also who which type of doctor did it and where? Thankyou