Common mistakes around Gluten Labor

The question about common mistakes in gluten lab testing is valid, but the provided knowledge contexts contain no specific information on gluten. Generally known pitfalls: Many people misinterpret a positive IgG antibody test for gluten as proof of food intolerance or celiac disease. In reality, IgG tests only indicate exposure, not clinical relevance. For celiac disease, IgA antibodies (tTG) and duodenal biopsy are the gold standard. DNA tests for HLA-DQ2/DQ8 can only rule out genetic predisposition, not diagnose. A common mistake is starting a gluten-free diet before completing diagnostic workup – this skews all test results. Additionally, the utility of gluten sensitivity tests is often overestimated; evidence for non-celiac gluten sensitivity is weak. Without medical guidance, one risks unnecessary diets and nutrient deficiencies. The contexts provided here cover other topics (thyroid, vitamins, DNA tests), so evidence for gluten-specific claims is considered unclear.