Deamidated Gliadin Peptide (DGP) IgG

IgG antibodies to deamidated gliadin peptide (DGP) are markers for celiac disease. This test is particularly useful for diagnosing celiac disease in individuals with IgA deficiency, a condition that is more common in the celiac population. It can also be helpful in children under two years old, where other antibody tests may be less reliable. Elevated levels suggest an immune response to gluten.