wie testet man eine glutenunverträglichkeit — what does this mean exactly?

Testing for gluten intolerance is not straightforward because the term covers several conditions: celiac disease (an autoimmune disorder), wheat allergy, and non-celiac gluten sensitivity (NCGS). For celiac disease, the standard approach is a blood test for tissue transglutaminase antibodies (tTG-IgA), followed by an intestinal biopsy if positive. A genetic test for HLA-DQ2/DQ8 can rule out celiac disease but cannot confirm it. For NCGS, there is no validated biomarker; diagnosis relies on exclusion and a medically supervised gluten-free diet. Direct-to-consumer tests (e.g., for 'gluten sensitivity') often lack evidence and may lead to misdiagnosis. The provided MyBody-X knowledge base does not contain specific information on gluten testing, so caution is warranted. If celiac disease is suspected, consult a doctor before starting a gluten-free diet, as this can skew test results.