Testing may also be ordered in those who have other autoimmune diseases. Celiac disease blood tests measure the amount of particular antibodies in the blood. The most common tests include: Tissue transglutaminase antibody (tTG), IgA class — the primary test ordered to screen for celiac disease.
Tissue Transglutaminase (tTG) Antibody, IgA, Serum is useful for evaluating patients suspected of having celiac disease, including patients with compatible clinical symptoms, patients with atypical symptoms, and individuals at increased risk (family history, previous diagnosis with associated disorder, positivity for HLA DQ2 and/or DQ8). Screening test for dermatitis herpetiformis, in conjunction with endomysial antibody test. Monitoring adherence to gluten-free diet in patients with dermatitis herpetiformis and celiac disease.
<4.0 U/mL (negative) 4.0-10.0 U/mL (weak positive) >10.0 U/mL (positive)
Reference values apply to all ages.
