So, is their reasoning for doing another biopsy after you've been gluten free for awhile to get a comparison of before and after? In other words, there should be healing of the SB lining if you go gluten free for awhile if you have celiac disease?

Welcome to the forum, @Tazzy11! Yes, your DGP-IGG test is positive. It means you could have celiac disease. But there are other possible causes for an elevated DGP-IGG count. I note that your TTG-IGA was not positive. The TTG-IGA is considered the chief celiac antibody test and a bit more reliable than the DGP-IGG. But let me ask you an important question. Prior to the blood draw, had you already begun to limit your intake of gluten? Also, were these the only two tests ordered to check for celiac disease? A physician should always order what we call the "total IGA" test (it goes by other names as well) to check for IGA deficiency. If you are IGA deficient, the scores for individual IGA celiac antibody tests, such as the TTG-IGA will be falsely low. By the way you spelled "coeliac" I judge you must be in the UK. There are several other antibody tests that can ordered when checking for celiac disease in order to get a more complete picture. Here is an article outlining the various tests:  

This article might be helpful. It breaks down each type of test, and what a positive results means in terms of the probability that you might have celiac disease. One test that always needs to be done is the IgA Levels/Deficiency Test (often called "Total IGA") because some people are naturally IGA deficient, and if this is the case, then certain blood tests for celiac disease might be false-negative, and other types of tests need to be done to make an accurate diagnosis. The article includes the "Mayo Clinic Protocol," which is the best overall protocol for results to be ~98% accurate.    Per this article: They will likely schedule an endoscopy to see if you have celiac disease, and for this they would want you to continue eating gluten daily until that test is completed.

This article might be helpful. It breaks down each type of test, and what a positive results means in terms of the probability that you might have celiac disease.     

You can search this site for prescriptions medications, but will need to know the manufacturer/maker if there is more than one, especially if you use a generic version of the medication: To see the ingredients you will need to click on the correct version of the medication and maker in the results, then scroll down to "Ingredients and Appearance" and click it, and then look at "Inactive Ingredients," as any gluten ingredients would likely appear there, rather than in the Active Ingredients area. https://dailymed.nlm.nih.gov/dailymed/