ist reis glutenhaltig — what can you do yourself?

The question of whether rice contains gluten is straightforward: rice is naturally gluten-free. However, processed rice products (e.g., rice flakes, rice cakes, ready meals) may be cross-contaminated with gluten-containing grains. What you can do yourself: Look for 'gluten-free' labels or certification from celiac organizations. If you suspect celiac disease or gluten sensitivity, home tests are unreliable – see a doctor for blood tests (anti-tissue transglutaminase antibodies) and possibly a duodenal biopsy. Genetic testing for HLA-DQ2/DQ8 can indicate risk but not confirm diagnosis. The SNP rs1726866 mentioned in your context is unrelated to gluten intolerance. The evidence level is mixed because the answer combines well-established facts (rice is gluten-free) with uncertain self-testing options.