ist gluten in reis — which blood markers matter?

Rice is naturally gluten-free; gluten is found only in wheat, rye, barley, and their derivatives. For suspected celiac disease or gluten sensitivity, relevant blood markers include anti-tissue transglutaminase IgA (tTG-IgA) as first-line test, along with total IgA to rule out IgA deficiency. If IgA deficient, anti-deamidated gliadin peptides (DGP-IgG) or anti-endomysium IgA (EMA) are used. These markers have high sensitivity and specificity for celiac disease (evidence: human-strong). For non-celiac gluten sensitivity (NCGS), no validated blood markers exist; diagnosis relies on exclusion and dietary challenge. Genetic testing for HLA-DQ2/DQ8 can rule out celiac predisposition but cannot confirm active disease. Positive serology requires duodenal biopsy for confirmation. Consumer tests claiming to measure 'gluten sensitivity' via IgG or IgA against gliadin often lack standardization and may mislead. Since rice is gluten-free, blood markers are only relevant if hidden gluten sources (e.g., processed rice products with wheat additives) are suspected.