DGP (deamidated gliadin peptide)

Deamidated gliadin peptide (DGP) is a modified form of a protein fragment from gluten, the protein found in wheat, barley, and rye. When someone with gluten sensitivity or celiac disease consumes gluten, their immune system reacts to these peptides, causing damage to the small intestine. DGP tests help identify this immune response by detecting antibodies against these specific gluten fragments. This makes DGP a useful marker for diagnosing and monitoring gluten-related disorders, providing more accurate results than some older tests, especially in cases where gluten exposure is recent or ongoing.