Is Zöliakie Test useful for Sport?

A celiac test (e.g., tTG antibodies or HLA-DQ2/DQ8) can be useful for athletes if they experience persistent fatigue, unexplained performance decline, bloating, or iron deficiency. Untreated celiac disease impairs nutrient absorption and triggers inflammation, harming endurance and recovery. However, screening asymptomatic athletes without risk factors is not evidence-based. The tests are reliable for diagnosis, but confirmation requires a gastroenterologist and duodenal biopsy. For recreational sport without symptoms, the test is unlikely to add value; a balanced diet without unnecessary gluten avoidance is recommended. Caveat: self-testing without medical guidance may lead to misinterpretation or unnecessary dietary restrictions.