The GI doctor called this evening with Izzy's stool sample results. His stools are highly acidic, and contain 3+ mg of sugars. According to the doctor, this indicates that Izzy definitely has an intolerance to something I am eating - most likely dairy.
She is using the first stool sample result as a baseline. I am supposed to completely eliminate soy, dairy, citrus, and peanuts (which I've been doing for the past two weeks), and then take in a new stool sample to have it analyzed.
Although I expected her to call with bad news, I was hopeful that his stools would come back normal.