was tun bei allergischer reaktion — which blood markers matter?

In an allergic reaction, the most relevant blood markers are total IgE and allergen-specific IgE. Elevated total IgE indicates an atopic tendency but is not diagnostic. Specific IgE (e.g., to pollen, dust mites, foods) helps identify triggers. Additionally, eosinophil count in the complete blood count is often elevated in allergic conditions. However, these markers must be interpreted in clinical context: a positive IgE does not always mean allergy. For acute anaphylaxis, immediate treatment (epinephrine) is critical, not lab tests. Consumer DNA or blood tests that claim to detect 'allergies' via IgG or single SNPs lack clinical validation. Standard allergy diagnosis relies on skin prick tests and specific IgE measured in certified labs. If you suspect an allergy, consult an allergist for proper testing and management. Self-testing can lead to unnecessary dietary restrictions or missed serious conditions.