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Coeliac Screen - Diamidated Gliadin Peptide (DGP) IgG Antibody

Coeliac Screen - Diamidated Gliadin Peptide (DGP) IgG Antibody

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The primary blood test for coeliac disease is tTG-IgA (tissue transglutaminase IgA), though a small percentage of individuals with coeliac disease may test negative. If total IgA levels are low, the laboratory will automatically add DGP-IgG testing, as low IgA can make tTG-IgA unreliable, but this testing approach still doesn't detect all cases.

A positive result for either tTG-IgA or DGP-IgG supports a diagnosis of coeliac disease, but further testing and clinical consultation are necessary, and it is crucial to continue consuming gluten before testing to avoid false negatives.

Sample type: Blood

Turn around time: 1 week

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