Retest after negative celiac blood panel results

[AustinTX]

I had a celiac blood test in December 2019 and results were negative. All my numbers were extremely low - not even close to the range that would be considered positive. Example: my tissue transglutaminase AB, IGG result was 1 U/ml; a positive result would have been >6 U/ml. My Iga was in the middle of normal range so I don’t think I deal with low IgA production. When I took the test, I was under-eating and unintentionally limiting gluten due to my digestive issues. I’d maybe have a plain bagel with cream cheese a few times a week but was otherwise eating mostly chicken, rice, and avocado. My new doctor wants to test for celiac again. I would have thought that, if I do have celiac, the numbers in my initial test would be borderline or at least higher than they were since I was consuming some gluten in my diet. Do you think that’s the case? 

[trents]

Welcome to the forum, Austin!

In answer to your question, it's hard to know how much your only occasional gluten consumption previous to testing impacted the antibody scores.

[Scott Adams]

If you do retest, be sure to eat gluten daily, at least two slices of wheat bread’s worth, for 6 to 8 weeks before the test.

Also, there is a condition called non-celiac gluten sensitivity that up to 10 times more people have than celiac disease, but there are no tests for this condition yet. At some point it may make sense for you to try out a gluten-free diet for a few months to see if it helps with your symptoms.