Assessment of Duodenal Epithelial Integrity in Celiac Disease With Mucosal Impedance

During routine endoscopy, consented study participants will have a mucosal impedance catheter sensor positioned along the mucosal wall to measure resistance across the mucosa. The study procedure will add approximately 1-2 minutes of anesthesia time for each participant.

At time of endoscopy, subjects with initial positive CeD serology will have a blood sample taken for any missing CeD serologies and intestinal fatty acid-binding protein (IFABP). This will be done at time of IV initiation as to avoid any additional venipuncture.