Evidence check: Ferritin in the context of allergy

Ferritin is an acute-phase protein that can rise during inflammation, including allergic reactions. However, ferritin is not a specific marker for allergies. Elevated levels may result from systemic inflammation, infection, or iron overload, not necessarily from allergy itself. Allergy diagnostics primarily rely on IgE antibodies, eosinophils, and skin tests. A ferritin test alone does not reliably indicate the presence or severity of an allergy. The evidence for a direct link between ferritin and allergy is weak and based on mechanistic reasoning (ferritin as an inflammatory marker). Caveat: Elevated ferritin should always be interpreted alongside other inflammatory and iron parameters. Without specific clinical context, no conclusion about allergy diagnosis can be drawn.