wie lange gluten essen vor zöliakie-test — what does this mean exactly?

The question 'wie lange gluten essen vor zöliakie-test' translates to: How long should one eat gluten before a celiac disease test (blood antibody test and/or duodenal biopsy) to ensure accurate results? Medical guidelines (e.g., ESPGHAN, ACG) generally recommend a gluten-containing diet for at least 6–12 weeks (about 1–3 servings of gluten per day) prior to serology and biopsy. If already on a gluten-free diet, a deliberate gluten challenge is necessary to avoid false negatives. The exact duration may vary based on age, symptoms, and test type – a physician should determine the individual preparation. Importantly, a DNA test for celiac risk variants (e.g., rs2395182) is not diagnostic; it only indicates genetic predisposition, not active disease. Adhering to gluten exposure is critical for diagnostic reliability.