<<Disclaimer: Verify this information before applying it to your situation.>> As I previously posted, our group recently had a wonderful presentation by our supporting Gastroenterologist. With all the current discussions of people either already diagnosed with Celiac by Biopsy, or those presuming they have Celiac and planning another Biopsy, or gluten challenge, I was not able to pin him down with a firm answer. I explained in particular how parents with small children who received relief from the gluten-free diet did not want to purposefully expose the children to such discomfort. We do know that the villi change every three days, but he said the healing in the small intestine starts distally, not proximally. So- there may still be evidence of lesions right below the stomach. He said it all depended on the degree of small intestine involvement to start out with. As I said, he did not specifically say if it was necessary to eat gluten immediately before the Biopsy. The question also came up about oats. He talked about picturing foods on a chart. Rice and corn (allowable foods), at the top, OATS are around the middle, and wheat is at the bottom. He explained that maybe that's why some people can tolerate it. Food for thought! Lynn from Omaha