Zöliakie Test: can a microbiome test help?

A microbiome test cannot diagnose celiac disease. Celiac is confirmed via specific antibody tests (tTG-IgA, EMA) and duodenal biopsy. The underlying genetics (HLA-DQ2/DQ8) are also relevant but not covered by microbiome tests. However, studies show that the gut flora in celiac patients is often altered – e.g., fewer Bifidobacteria and more pathogenic bacteria. A microbiome test might therefore indicate dysbiosis associated with the condition or with a gluten-free diet. Yet clinical utility is limited: there are no standardized microbial markers for celiac, and dietary or probiotic adjustments based on such tests lack evidence. MyBody-X offers a microbiome test that profiles bacteria but is not designed for celiac. Anyone suspecting celiac should consult a physician, not rely on a microbiome test. Evidence grade: mechanistic (general knowledge), no specific studies from context. Safety note: microbiome tests do not replace medical diagnosis.