See a healthcare professional if celiac disease is suspected
Do not start a gluten-free diet before testing
Blood tests for celiac antibodies
Tissue transglutaminase IgA (tTG-IgA)
Total serum IgA
Endomysial antibody IgA (EMA-IgA)
Deamidated gliadin peptide antibodies if needed
Upper endoscopy with small intestine biopsy
Genetic testing for HLA-DQ2 and HLA-DQ8 in selected cases
Evaluate symptoms, family history, and risk factors
Confirm diagnosis before long-term dietary changes