was machen bei allergischer reaktion — which blood markers matter?

Regarding blood markers for allergic reactions, the provided context contains limited specific information. The only immun biomarker mentioned is C-reactive protein (CRP) via SNP rs1205, which influences baseline CRP levels. CRP is a non-specific inflammation marker that can rise during allergic reactions but cannot distinguish allergy from other causes. Clinically relevant markers for allergy include total IgE, specific IgE (e.g., against pollen or foods), eosinophil count, and tryptase (for anaphylaxis). Direct-to-consumer DNA tests rarely offer validated allergy diagnostics; interpreting variants in genes like NR3C1 (glucocorticoid receptor) or CRP is not actionable for acute allergy. For suspected allergy, a physician should perform specific IgE tests or skin prick testing. Evidence for CRP alone is mechanistic and insufficient. Safety note: In acute allergic reaction (e.g., anaphylaxis), call emergency services immediately – do not rely on self-testing.