Did a little more research just now and found out that even though the max methane should not exceed 10. It is normal to be around 3 and not rise. Again, I was at 13 so this does make me a bit suspicious. This was done back in May of 2024. I do recall being put on 14 day Antibiotic called Rifaximin but I'm really not sure if it made a difference, but if it did, then the problems still came back:( 

I did a SIBO Test about a year ago, and I barely elevated on the Methane portion (max was 10 and I hit 13). Dr wasn't too concerned.    

Have you looked into SIBO (Small Intestine Bacterial Overgrowth)?  Also, MCAS (Mast Cell Activation Syndrome)/histamine intolerance (they go together like a hand and glove).  Both of the above are common in the celiac community.

So tough for me when my symptoms are asymptomatic. Only excessive gas, floating stools and occasional discomfort in my lower right abdomen. These symptoms do not change, regardless of how I eat too:(  I'm sure that next week the GI doctor will discuss my findings and pathology results with me. It's at that time I may push for an MRI or CT scan of the abdomen. I prefer the MRI to avoid unnecessary radiation too. 

The problem with dairy isn't necessarily lactose which is the sugar component. It can be but the other issue and the more serious one from the standpoint of celiac disease is the protein casein. It can damage intestinal mucosa just like gluten. https://pmc.ncbi.nlm.nih.gov/articles/PMC1810502/