Welcome to the forum, @Mettedkny! Your ttg-igg numbers are elevated but what about your ttg-iga numbers? Were your ttg-iga numbers elevated at your original diagnosis? The reason I ask is because elevated igg antibody test scores are more likely to be caused by something else besides a celiac reaction to gluten. The ttg-iga test is considered to be the centerpiece of celiac disease blood antibody testing. But some people are seronegative for the iga celiac tests, particularly if they are iga deficient. If they are iga deficient, the igg tests can be helpful. Have you ever had a "total iga" test run to check for iga deficiency?

Not sure where to start - been diagnosed for 17 years, and for 16 years my bloodwork has been perfect. Last May I started on HRT (estrogen patch & progesterone pill) for post menopausal symptoms, and to help with mild osteoporosis. In June my Gliadin IgG numbers suddenly went up to 59 (from previously being below 5 for 16 years). Did a deep dive on the progesterone pill manufacturer (Aurobindo) to ensure that the medication IS gluten free - and was told multiple times that there is no gluten in the pills. The pill is the ONLY thing that has changed, and my son, who is also celiac has perfect numbers.  Scoured my life to try and find out where the gluten could be coming from and the only thing I found was a tea I drank that had "possible wheat straw" (had been drinking this tea for about 5 years with no issues - and was confirmed by the manufacturer that their tea is certified gluten-free despite the "straw") - cut the tea out thinking that it MUST be the tea. Repeated the blood test 3 months later and it dropped to 55 - not indicative that the gluten has been found and removed from my diet. Had bloodwork done again yesterday and it is now 95 😳 I am completely floored. WHERE is it coming from??? I am SO careful. Would NEVER cheat, don't eat out and like I said, my son has NO issues and his number is 3 (as of yesterday). Has anyone had a problem with progesterone pills? It is the only variable that I can think of, but how do I prove that it is the problem without discontinuing to take the HRT (which I really need for post menopausal symptoms, sleep, anxiety, brain fog and hot flashes).

That’s a good thought, I didn’t think of that aspect of waiting longer! Thanks 

Thanks for reporting back @Nicbent35! You seem to understand the options and the risks. So, it is a decision you will just have to make. But you don't have to make it right away. You might consider keeping her gluten-free for a while yet. I would give it six months before considering adding gluten back in. Make sure the improvement you are seeing is due to removing gluten and not something else that will pass such that you see a reversion to former behavior and symptoms.

If you have been on a strict gluten-free diet for several years, it would be normal for testing to show no evidence of celiac disease. No gluten, no inflammation. No inflammation, no antibodies and healing of the small bowel lining would result.  Personally, I think the doc gave you bad advice and I feel confident that trialing a return to gluten consumption would not be the advice that the vast majority of GI docs would give you. If I were you, I would seek a second opinion before resuming gluten consumption.