What should I know about unvertraglichkeitstest blut?

Blood-based intolerance tests (usually IgG tests) are marketed as 'food sensitivity tests' but lack scientific validation for diagnosing food intolerances. Medical guidelines (e.g., from EAACI) advise against them because IgG antibodies indicate normal immune exposure, not intolerance. True intolerances like lactose or fructose malabsorption are diagnosed via breath tests or elimination diets. These tests often lead to unnecessary dietary restrictions, nutrient deficiencies, and anxiety. A positive result does not mean you need to avoid that food. The evidence is weak and based on marketing, not clinical validation. If you have symptoms, consult a doctor or dietitian before making dietary changes based on such tests.