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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.
Celiac disease serology will normalize if the patient is on a gluten-free diet. Therefore, confirm that the patient is maintaining a normal, gluten-containing diet in order to ensure for the most accurate test results. Total Immunoglobulin A Antibody (test code 539) IgA-tTG (test code 8821)