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Celiac disease blood tests measure the amount of particular antibodies in the blood. The most common tests include: Tissue transglutaminase antibody (tTG), IgA class â the primary test ordered to screen for celiac disease.
Examples of these include. 1  Anti-gliadin antibodies â this is a blood test that measures for antibodies to one of the types of gluten found in wheat. 2  Anti-tissue transglutaminase â this test is only specific for celiac disease and also has a tendency to come back falsely negative. Intestinal Biopsy â this test is also only specific for celiac disease and comes back with a lot of false negatives.