Anti tissue transglutaminase IgG analysis (Anti Tissue Transglutaminase IgG, Serum) is a laboratory test used to detect the presence of antibodies against the tissue transglutaminase enzyme, helping to evaluate immune reactions to gluten. This analysis is mainly used in cases of celiac disease, especially in patients who may not show elevated IgA levels. This test is considered an important tool in diagnosing dietary disorders and monitoring conditions related to hypersensitivity.