When is IgG Unverträglichkeit Kinder actually useful?

IgG food intolerance testing in children is widely marketed but has very limited clinical utility. IgG antibodies primarily indicate prior exposure to a food protein, not an adverse reaction or intolerance. In children, whose immune systems are still maturing, elevated IgG levels are common and often harmless. Major allergy and immunology societies (e.g., EAACI, AAAAI) explicitly recommend against using IgG tests to diagnose food allergies or intolerances. The only rare exceptions are specific IgG-mediated conditions (e.g., certain immunodeficiency disorders) under specialist supervision. In practice, these tests frequently lead to unnecessary dietary restrictions, nutritional deficiencies, and parental anxiety. The evidence base is weak and largely driven by commercial interests rather than robust clinical trials. For a child with suspected food-related symptoms, validated methods like skin prick tests, specific IgE measurement, or supervised oral food challenges remain the gold standard. Parents should consult a pediatrician or allergist before considering any IgG-based test.