Tissue Transglutaminase Antibody (IgG+IgA)
This test is done to detect antibodies against tissue transglutaminase, an enzyme involved in the intestinal lining. These antibodies are produced in response to gluten exposure in individuals with celiac disease. Measuring both IgA and IgG improves detection, especially in patients with IgA deficiency or suspected gluten-related autoimmune disease.