<<Disclaimer: Verify this information before applying it to your situation.>> Hi Listmembers: I am chairwoman for a celiac-sprue support group and am interested in any information that would explain the best way to do the gluten-challenge. Many of our members were not diagnosed with celiac- sprue through antibody testing or endoscopy (the gold standard for celiac disease). This has presented a problem as to whether they are really celiac patients. Many check the internet and find that if a person goes on the strict gluten-free diet, they will feel a lot better. So they do this without realizing that the small intestine is now healing and antibody blood screening can now become negative. Has anyone attempted the gluten-challenge? Could you let me know how long this was done, what products were consumed and the outcome? Thanks a million. Cindy in NJ Southern NJ Celiac-Sprue Support Group