What does the Celiac Disease Screening Test measure?

This test checks for antibodies that, when present, may indicate celiac disease. These antibodies include: 

  • Total immunoglobulin A (IgA, included as a test control
  • Tissue transglutaminase immunoglobulin A (tTG-IgA)
  • Deamidated gliadin peptide immunoglobulin G (DGP-IgG, included only as needed) 

When you have celiac disease and ingest gluten, your immune system may react by releasing the antibodies tTG-IgA and DGP-IgG, which cause inflammation and damage to your small intestine. You may have celiac disease if you have these antibodies along with symptoms. 

Only a healthcare provider or specialist can confirm celiac disease by reviewing your medical history and symptoms and by performing additional tests if needed.