Is Eisen-Ferritin Selbsttest useful for allergy?

The usefulness of an iron-ferritin self-test for allergies is not supported by scientific evidence. Ferritin is a storage protein for iron, primarily used to assess iron status (e.g., in anemia or iron overload). Allergies are immune-mediated hypersensitivity reactions involving specific IgE antibodies or T-cells. There is no robust evidence that ferritin levels directly correlate with allergic conditions. While some research suggests iron deficiency may influence immune function, this is not a validated biomarker for allergy diagnosis. Self-tests for ferritin without clinical context can lead to misinterpretation and unnecessary interventions. For allergy evaluation, established methods such as skin prick tests, specific IgE measurements, and clinical history are required. Therefore, the iron-ferritin self-test is not useful for allergy assessment and should not be relied upon. The evidence is weak and not based on clinical guidelines.