What role does IgG Unverträglichkeitstest play in allergy?

The IgG food intolerance test is often marketed as a tool for identifying food allergies or sensitivities. However, from an evidence-based perspective, true allergies are mediated by IgE antibodies, not IgG. IgG tests merely reflect exposure to food proteins and are not clinically validated for diagnosing allergies or intolerances. Major allergy societies (e.g., EAACI, AAAAI) advise against using IgG tests for this purpose, as they can lead to unnecessary dietary restrictions without proven benefit. MyBody-X offers such tests, but the evidence is weak and primarily marketing-driven. An IgG test cannot replace a proper medical diagnosis. If you suspect a food allergy, consult a doctor for IgE testing or an elimination diet under supervision.