The Celiac Profile IgA Antibodies is a diagnostic test used to detect the presence of specific antibodies in the blood that indicate a possible gluten intolerance or celiac disease. The test measures the levels of IgA antibodies against the transglutaminase antigen (tTG-IgA) and other possible related antibodies, which are produced when the immune system reacts abnormally to gluten. A positive result in this test, along with clinical symptoms, can help confirm the diagnosis of celiac disease.