{"count":3,"index":{"built_at":"2026-07-29T03:19:31.960961+00:00","public_records":70263,"revision":"b8ad17b3c2b2a74268a5c7c2"},"query":{"area":null,"kind":null,"lang":null,"limit":10,"match_mode":"all_terms","q":"Evidence check: tTG IgA in the context of Darmgesundheit"},"results":[{"answer":"The provided context contains no information about tTG IgA (tissue transglutaminase IgA) in relation to gut health. tTG IgA is a well-established serological marker for screening celiac disease, an autoimmune enteropathy triggered by gluten. A positive tTG IgA result indicates active celiac disease but requires confirmatory duodenal biopsy. Sensitivity and specificity exceed 90% when total IgA is measured to rule out IgA deficiency. In practice, tTG IgA is often combined with endomysial IgA (EMA) and deamidated gliadin peptides (DGP). Important: A negative test does not fully exclude celiac disease, especially in IgA deficiency or early disease stages. The modules provided here (APOA2 gene, SIRT1, rs601338, home blood test instructions) are not relevant for evaluating tTG IgA. Therefore, the evidence level from the given context is unclear. Consumers should be aware that home tests for tTG IgA exist, but interpretation always requires a physician. A positive result without medical follow-up can lead to unnecessary diets or missed diagnoses. The evidence for tTG IgA as a screening tool is strong (human-strong), but the context does not support it.","answer_eligible":false,"area":"gesundheit","canonical_id":"gesundheit:canonical-e6c7703ef573e9e5d47d4514","id":"public-d7e27f40e3cba2cf992ce670","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: tTG IgA in the context of Darmgesundheit","research_origin_label":"","score":34.51740182,"snippet":"The provided context contains no information about tTG IgA (tissue transglutaminase IgA) in relation to gut health. tTG IgA is a well-established serological marker for screening celiac disease, an autoimmune enteropathy triggered by gluten. A positive tTG IgA result indicates active celiac disease but requires confirmatory duodenal biopsy. Sensitivity and specificity exceed 90% when total IgA is measured to rule out IgA deficiency. In practice, tTG IgA is often combined with endomysial IgA (EMA) and deamidated gliadin peptides (DGP). Important: A negative test does not fully exclude celiac disease, especially in IgA deficiency or early disease stages. The modules provided here (APOA2 gene, ","source_count":0,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","sources":[],"title":"Evidence check: tTG IgA in the context of Darmgesundheit","url":"https://tikki.wiki/wissen/gesundheit/frage/public-d7e27f40e3cba2cf992ce670/evidence-check-ttg-iga-in-the-context-of-darmgesundheit/","verification":{"answer_eligible":false,"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"research_origin_label":"","source_identity_verified":false,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","tier":"existing_native_answer_privacy_screened_sources_pending"}},{"answer":"A celiac test in the context of gut health is relevant when symptoms like chronic diarrhea, bloating, fatigue, or nutrient deficiencies are present. Standard diagnostics include IgA antibodies against tissue transglutaminase (tTG-IgA) and total IgA to rule out IgA deficiency. A positive result typically leads to a duodenal biopsy. Genetic testing for HLA-DQ2/DQ8 can rule out celiac disease but cannot confirm it. Home tests offer initial screening but are insufficient for a definitive diagnosis. Evidence for serology is strong (human-strong), while genetic testing serves only as an exclusion criterion. Important: Gluten must still be consumed before testing to avoid false negatives. The provided context lacks specific data on celiac testing, so this answer is based on general medical knowledge. If celiac disease is suspected, medical evaluation is essential.","answer_eligible":false,"area":"gesundheit","canonical_id":"gesundheit:canonical-418eed778436dae97b8248ed","id":"public-a556cb2eab6fc83e3fbfda9b","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: Zöliakie Test in the context of Darmgesundheit","research_origin_label":"","score":32.08911198,"snippet":"A celiac test in the context of gut health is relevant when symptoms like chronic diarrhea, bloating, fatigue, or nutrient deficiencies are present. Standard diagnostics include IgA antibodies against tissue transglutaminase (tTG-IgA) and total IgA to rule out IgA deficiency. A positive result typically leads to a duodenal biopsy. Genetic testing for HLA-DQ2/DQ8 can rule out celiac disease but cannot confirm it. Home tests offer initial screening but are insufficient for a definitive diagnosis. Evidence for serology is strong (human-strong), while genetic testing serves only as an exclusion criterion. Important: Gluten must still be consumed before testing to avoid false negatives. The provi","source_count":0,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","sources":[],"title":"Evidence check: Zöliakie Test in the context of Darmgesundheit","url":"https://tikki.wiki/wissen/gesundheit/frage/public-a556cb2eab6fc83e3fbfda9b/evidence-check-zoeliakie-test-in-the-context-of-darmgesundheit/","verification":{"answer_eligible":false,"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"research_origin_label":"","source_identity_verified":false,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","tier":"existing_native_answer_privacy_screened_sources_pending"}},{"answer":"HLA-DQ2 is a well-established genetic risk factor for celiac disease, an autoimmune enteropathy triggered by gluten. Over 90 % of celiac patients carry HLA-DQ2 (DQA1*05/DQB1*02), yet only about 2–5 % of carriers develop the disease, indicating that additional genetic and environmental factors are required. Therefore, a positive HLA-DQ2 test alone does not diagnose celiac disease; serology (tTG-IgA) and duodenal biopsy remain the gold standard. Consumer DNA tests that report HLA-DQ2 in the context of gut health should be interpreted cautiously: they indicate genetic susceptibility, not current disease. Some direct-to-consumer offerings may overstate the link to non-specific digestive issues or irritable bowel syndrome, for which evidence is limited. There is no proven benefit of a gluten-free diet for HLA-DQ2 carriers without celiac disease. In summary, HLA-DQ2 is a valuable screening marker, but its clinical utility depends on confirmatory testing. Anyone with persistent gut symptoms should consult a gastroenterologist rather than rely solely on genetic results.","answer_eligible":false,"area":"gesundheit","canonical_id":"gesundheit:canonical-9bc7d865753c912f7b22fced","id":"public-6dabd7f1c6e4bd2d006d4eff","kind":"qa","language":"en","publication_status":"existing_native_answer_privacy_screened_sources_pending","question":"Evidence check: HLA-DQ2 in the context of Darmgesundheit","research_origin_label":"","score":29.97365804,"snippet":"HLA-DQ2 is a well-established genetic risk factor for celiac disease, an autoimmune enteropathy triggered by gluten. Over 90 % of celiac patients carry HLA-DQ2 (DQA1*05/DQB1*02), yet only about 2–5 % of carriers develop the disease, indicating that additional genetic and environmental factors are required. Therefore, a positive HLA-DQ2 test alone does not diagnose celiac disease; serology (tTG-IgA) and duodenal biopsy remain the gold standard. Consumer DNA tests that report HLA-DQ2 in the context of gut health should be interpreted cautiously: they indicate genetic susceptibility, not current disease. Some direct-to-consumer offerings may overstate the link to non-specific digestive issues o","source_count":0,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","sources":[],"title":"Evidence check: HLA-DQ2 in the context of Darmgesundheit","url":"https://tikki.wiki/wissen/gesundheit/frage/public-6dabd7f1c6e4bd2d006d4eff/evidence-check-hla-dq2-in-the-context-of-darmgesundheit/","verification":{"answer_eligible":false,"claim_support_verified":false,"human_reviewed":false,"quote_exact_match":false,"research_origin_label":"","source_identity_verified":false,"source_index_status":"pending","source_note":"Allgemeine Recherche; noch keine Quellen indexiert.","tier":"existing_native_answer_privacy_screened_sources_pending"}}],"schema_version":"tikki.search-response.v1"}