How to prepare for IgG Unverträglichkeit Basis

Preparation for an IgG food intolerance test (like the IgG Unverträglichkeit Basis) is generally minimal. No fasting or special diet is required, as IgG antibodies reflect long-term exposure. However, some providers suggest maintaining your usual diet to get a representative result. Critically, the scientific evidence for IgG-based food intolerance testing is weak. Major allergy and immunology societies (e.g., EAACI, DGAKI) advise against these tests because IgG is a normal immune response to food and does not reliably indicate intolerance or allergy. Positive results may lead to unnecessary dietary restrictions. If you still choose to take the test, no specific preparation is needed, but do not use it as a sole basis for dietary changes. For persistent symptoms, consult a doctor or dietitian who can recommend evidence-based approaches like an elimination diet or breath tests.