Celiac Disease & Gluten-free Diet Information at Celiac.com - http://www.celiac.com
Colonoscopy, by Joseph A. Murray, MD. of the Mayo Clinic Rochester, MN, a Gastroenterologist who Specializes in the Treatment of Celiac Disease
http://www.celiac.com/articles/43/1/Colonoscopy-by-Joseph-A-Murray-MD-of-the-Mayo-Clinic-Rochester-MN-a-Gastroenterologist-who-Specializes-in-the-Treatment-of-Celiac-Disease/Page1.html
Scott Adams

In 1994 I was diagnosed with celiac disease, which led me to create Celiac.com in 1995. I created this site for a single purpose: To help as many people as possible with celiac disease get diagnosed so they can begin to live happy, healthy gluten-free lives. Celiac.com was the first site on the Internet dedicated solely to celiac disease. In 1998 I created The Gluten-Free Mall, Your Special Diet Superstore!, and I am the co-author of the book Cereal Killers, and founder and publisher of Journal of Gluten Sensitivity.

 
By Scott Adams
Published on 07/26/1996
 
This is not Medical advice: The biopsy determination of celiac disease requires demonstration

This is not Medical advice: The biopsy determination of celiac disease requires demonstration of the abnormalities in the proximal small intestine. It is not possible to get such a biopsy going through the anus. The colonoscope does not reach that far. The biopsy instrument must go through the mouth. This is usually achieved with a upper endoscopy (AKA gastroscopy, EGD) A colonoscopy is frequently preformed for the investigation of diarrhea but does not and can not detect celiac disease. Joseph A. Murray, MD.