wie lange gluten essen vor zöliakie-test — when to see a doctor?

For a reliable celiac disease test (tissue transglutaminase IgA antibodies), you need to consume gluten for at least 6–8 weeks before testing. This ensures antibody levels are high enough for accurate detection. The standard recommendation is a gluten-containing diet (about 10 g gluten per day, equivalent to 2–3 slices of bread) for 6–8 weeks. For children, 2–4 weeks may be sufficient. See a doctor if you experience symptoms like chronic diarrhea, bloating, fatigue, or unexplained anemia. Do not start a gluten-free diet before testing, as this can lead to false-negative results. The diagnosis typically involves blood tests followed by an intestinal biopsy. Always consult a gastroenterologist for personalized advice. Caveat: In severe cases or in children, shorter gluten exposure may be acceptable under medical supervision.