Myths vs facts: AllergieCheck | IgE-Antikörper Test and Müdigkeit

Myth: A positive IgE test (AllergieCheck) proves an allergy and explains fatigue. Fact: A positive IgE indicates sensitization only – many sensitized individuals have no symptoms. Fatigue can be aggravated by allergies (e.g., allergic rhinitis disrupting sleep), but it is non‑specific. Causes like iron deficiency, thyroid disorders, or celiac disease (HLA‑DQ2/DQ8 risk) are not detected by IgE tests. The test measures only IgE‑mediated reactions, not intolerances or non‑allergic hypersensitivity. A thorough history and, if needed, provocation tests are required to confirm clinically relevant allergy. Fatigue alone does not justify an IgE test – evidence for a causal link is weak. Beware of lab marketing that promotes the test as a universal fatigue diagnostic.