How to prepare for IgG Unverträglichkeit Test

There is no evidence-based preparation for an IgG food intolerance test because such tests are not recommended by medical guidelines (e.g., DGAKI, EAACI). IgG antibodies against foods are a normal immune response and do not indicate intolerance or allergy. They frequently produce false positives, leading to unnecessary dietary restrictions. No special diet or fasting is required or supported by science. If you suspect a food intolerance, consult a doctor who may recommend validated tests such as IgE allergy tests, breath tests for lactose/fructose malabsorption, or a supervised elimination diet. IgG tests are particularly unreliable in children and can cause harm by promoting restrictive eating. Safety note: Do not base dietary changes solely on IgG results without medical supervision.