Evidence check: IgE Allergietest in the context of allergy

IgE allergy tests (specific IgE or skin prick tests) are a well-established component of allergy diagnostics. The evidence for their clinical utility is strong: they help detect sensitization to specific allergens. However, a positive IgE result does not equal clinical allergy – asymptomatic sensitization is common. Interpretation always requires correlation with patient history and, if needed, provocation tests. Direct-to-consumer tests (e.g., DNA-based allergy tests) are not evidence-based and are not recommended by professional societies. They often measure single gene variants with low predictive value. For clinical practice, IgE tests are a useful tool but not a standalone diagnostic proof. The evidence for their role in allergology is human-strong, with the caveat that false positives are frequent and specialist evaluation is essential.