Sorry! You must be logged in to read this post. Please sign up for your FREE MY-DSC account here. Login Tags:anti-tissue transglutaminase antibody IgAblood testsceliacceliac diseaseceliac disease testingceliac testingdistal duodenal biopsyendoscopyGliadin IgA IgGglutengluten intolerantIgA deficiencyIgA tTGAtotal globulin