What should I know about allergie bluttest?

An allergy blood test typically measures specific IgE antibodies to allergens such as pollen, pet dander, or foods. It can help confirm an IgE-mediated allergy when the clinical history is suggestive. However, the test has important limitations: a positive result does not necessarily mean a clinically relevant allergy – many people have specific IgE without symptoms (high false-positive rate). Conversely, a negative result does not rule out allergy, as non-IgE-mediated reactions exist (e.g., some food intolerances, celiac disease). The gold standard for diagnosis remains the skin prick test combined with a thorough medical history. A blood test alone is insufficient for dietary changes or avoidance strategies. Many direct-to-consumer (DTC) tests overstate its predictive power and may recommend unnecessary elimination diets. Always consult an allergist before acting on results. The test is useful when skin testing is not feasible (e.g., severe eczema) or for monitoring under immunotherapy. For food intolerances (lactose, fructose, histamine), IgE testing is not appropriate – other diagnostic methods are required. In summary: valuable in a clinical setting, but not a standalone solution.