See a healthcare professional before changing your diet
Ask for celiac blood tests while still eating gluten
Common blood tests include tissue transglutaminase IgA and total IgA
Additional blood tests may include deamidated gliadin peptide IgG or endomysial antibody
If blood tests are positive, get an upper endoscopy with small intestine biopsy
Do not stop eating gluten before testing unless instructed by a doctor
If you already stopped gluten, ask about a gluten challenge before testing
Consider genetic testing for HLA-DQ2 and HLA-DQ8 if diagnosis is unclear
Test first-degree relatives if celiac disease is diagnosed in the family
Follow up with a specialist if symptoms persist or results are unclear