Myths vs facts: AllergieCheck | IgE-Antikörper Test and Allergie

The AllergieCheck, which measures IgE antibodies, is often marketed as a comprehensive solution for identifying allergies. Fact: Elevated total IgE or specific IgE to certain allergens can indicate allergic sensitization, but they alone do not prove clinically relevant allergy. Many individuals have positive IgE tests without symptoms (silent sensitization). Conversely, allergies can occur without elevated IgE (non-IgE-mediated allergies). The German Society for Allergology and Clinical Immunology (DGAKI) warns against overuse of IgE panels without medical history. Direct-to-consumer (DTC) tests like AllergieCheck often provide non-actionable results because they ignore context, symptoms, and provocation tests. Evidence: The scientific basis for such broad screening is weak; clinical validity is lacking. Conclusion: An IgE test can be useful when used selectively after a physician's history. As a sole basis for diagnosis or diet, it is unsuitable. Safety note: Self-initiated dietary changes based on DTC tests can lead to malnutrition.