The only 2 tests that are accurate for celiac are a biopsy of your small intestine lining or the genetic blood test your regular doctor can order to know for sure. I’ve had trouble with severe constipation since birth and intestines bleeding. Finally had accurate diagnosis in my twenties for UC. Once I had my final Jpouch surgery, within 3 months this same attacking disease remain feared itself and went to my lungs to make its home. It is rare but UC can go to other places in the body called extra manifestations of bowel disease. Good GI drs know UC can go to the eyes, kidneys, liver and lungs. 2 years ago when I cut out all inflammatory foods gluten and all animal products....my lungs and jpouch have been quiet with Zero issues. A Jpouch only lasts so many years and I wish I’d tried everything before having surgery. I just didn’t know but am thankful for this surgery of course.