<<Disclaimer: Verify this information before applying it to your situation.>> I was diagnosed w/ CS 5 years ago. I have kept my son on a GF diet until recently. Twice he had wheat in a snack he got nfrom other kids. He then got diarrhea. I thought it may be a reaction to never having wheat, since it seemed to me that it would take some time before the antibodies caused intestinal damage. He had the giladin antibody blood tests last month. They came back negative, but another Dr. then informed me that he should have been fed gluten before the test inorder for the antibodies to occurr. I never went back because they had to stick him 7 times before they got a sample! I have since fed him wheat products and he has gotten a yellow diarrhea again. I guess I have my answer, but I was just looking for some advice. He has such a limited diet to begin with-he won't eat meat or vegetables, and he's only 25% weight, but 50% height for his age (2). Help?! Thanks Dana