This has to be one of the most frustrating parts of my job. Correcting misinformation from uneducated doctors and online "experts." And telling people that the celiac blood test is just a screener. There are too many false positives and false negatives from the blood test alone to use as a diagnostic tool currently. It needs to be used as a screener. The gold standard is an endoscopy. Remember, both the blood test and an endoscopy need to be done while eating a gluten FULL diet for accuracy.