When is Ferritin Männer actually useful?

The context provided does not directly address when ferritin testing is useful in men. Ferritin is a blood biomarker for iron stores, not a genetic test. Its utility depends on clinical context: elevated ferritin in men may indicate hemochromatosis (iron overload) or inflammation, while low ferritin suggests iron deficiency. Without medical interpretation (e.g., transferrin saturation, CRP), a single ferritin value is not diagnostic. The given context focuses on DNA tests and their limitations, offering no specific evidence on ferritin in men. A conservative answer: ferritin is useful when there is a clinical suspicion of iron metabolism disorder and the result is interpreted by a physician. Evidence level: human-observational / practice. Sources: none from context.