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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.
If your celiac disease blood tests come back positiveâor if they're negative, but you and your physician agree on the need for further testing anywayâyour next step is a procedure known as an endoscopy. This usually is performed by a gastroenterologist, one of the many types of doctors who treat celiac disease.