Common mistakes around IgE Allergie Basis

Common mistakes around IgE allergy testing: Many people assume that an elevated IgE level automatically means an allergy. In reality, IgE can also be elevated due to parasitic infections, autoimmune conditions, or even in healthy individuals. Another mistake is confusing total IgE with specific IgE – only specific IgE provides clues about particular allergens. It is also often overlooked that IgE tests alone do not diagnose an allergy; they must be correlated with symptoms and provocation tests. Furthermore, IgG tests are frequently marketed as allergy tests, but IgG actually indicates tolerance or exposure, not allergy. Another common error is ignoring that IgE levels vary with age and that false positives are common. The evidence base is mixed: while specific IgE is well-established for type I allergies, many commercial 'allergy panels' lack robust clinical validation. Bottom line: IgE tests are useful but only within a clinical context, not as standalone diagnostics.