This article assesses the diagnostic accuracy of the anti-tissue transglutaminase IgA antibody (tTG-IgA) test compared to esophagogastroduodenoscopy (EGD) in adults with Down syndrome (DS).The Utility of Anti-tissue Transglutaminase Antibody-IgA (tTG-IgA) Testing for Celiac Disease in Adults with Down SyndromeSource: Brian Chicoine MD, Shalin Parikh MD, Suela Sulo MSc, and Laura Chicoine