Can IgG Unverträglichkeitstest help with Allergie?

IgG-based food intolerance tests are often marketed as a tool to identify allergies or intolerances, but the scientific evidence supporting their use is weak. IgG antibodies reflect exposure to food proteins, not necessarily an adverse reaction. They are not validated for diagnosing food allergies or intolerances. Major allergy organizations (e.g., EAACI, AAAAI) advise against using IgG tests for this purpose because they frequently yield false positives, leading to unnecessary dietary restrictions. For true allergies, specific IgE testing or skin prick tests remain the gold standard. For intolerances, breath tests or elimination diets under medical supervision are recommended. While some practitioners use IgG panels as part of a broader assessment, they should not be used alone to make clinical decisions. Caveat: especially in children, reliance on IgG results can cause nutritional deficiencies and anxiety without proven benefit.