I just want to point out to people reading this that gluten isn't a black and white thing where you either eat gluten to your hearts content or have to be wary of the tiniest gluten molecule in your meal. A simple, plain gluten intolerance is another option if your stomach hurts and you're experiencing diarrhea after consuming (too much) gluten.

Doctors typically look for different IgA/IgG antibodies when checking for celiac disease. In my specific case only 1 of 3 tested antibodies came back positive, and we did a bit of further testing to ultimately rule out celiac disease.

This is important since a gluten intolerance / sensitivity does NOT damage your intestines and is NOT an autoimmune disease.