Thank you for the info on breath tests. Many GI doctors are not enlightened about these tests. My GI doctor, for example, diagnosed me with SIBO based on symptoms and called the breath tests unreliable. My nutritionist subsequently said she wished the doctor had ordered them when I was symptomatic so we could have known for sure. All this is less important to me now because I am doing better, but I would have insisted on a breath test then if I knew then what I know now.

I must also add that because I did not have any type of breath test at time of diagnosis, the nutritionist had to be more restrictive with the diet at first and assume I had all sorts of issues I may or may not have. For example, I have been gluten free, lactose free and not eating much sugar, other than sugar found in fruits and a drizzle of maple syrup here and there. Sounds like the breath test would have given us more important and useful information. Breath test did not matter so much to GI doctor, I suppose, because it did not alter his treatment, antibiotics and more antibiotics. I am not a medical doctor but it sounds like a breath test would be worthwhile.