<<Disclaimer: Verify this information before applying it to your situation.>> I would appreciate information on who I might contact in the Boston, MA area to request a CD diagnosis via rectal biopsy. My blood tests, performed after 3 months on a GF diet, (my doctor didn't have any experience with CD) came back negative. I have felt so good during these last 10 months, that I cannot suffer through a 3-6 week gluten challenge and GI biopsy. Thanks for any information you may have. Please reply privately.