<<Disclaimer: Verify this information before applying it to your situation.>> Hi all, I am undiagnosed, 35 lb. weight loss, unable to digest any starch, improved on a GF diet, biopsy negative. I've read that unless the biopsy is sent to a lab specializing in CD, the tissue changes might be missed. Does anyone have a lab to recommend for a second opinion? Also need a GOOD doc in the Wisconsin area. Thanks, Phoebe