Myths vs facts: Eisen-Ferritin Selbsttest and fatigue

Myths vs facts: Iron/ferritin self-test and fatigue. A self-test for ferritin (iron storage) can give a rough indication of iron deficiency, but it is not a complete diagnostic tool. Myth: 'Low ferritin always explains my fatigue.' Fact: Fatigue has many causes (poor sleep, stress, thyroid issues, vitamin D deficiency, inflammation). Isolated low ferritin may suggest iron deficiency, but ferritin is also an acute-phase reactant; it can be falsely elevated during inflammation, masking true deficiency. Myth: 'High ferritin means I have enough iron.' Fact: High ferritin can occur in infection, chronic disease, or hemochromatosis – not necessarily adequate iron stores. A self-test provides only a single lab value without clinical context. Reliable assessment requires additional markers (transferrin saturation, CRP, hemoglobin) and medical interpretation. Safety note: Self-supplementation with iron without proper diagnosis can be harmful in hemochromatosis or inflammatory conditions. This test is a screening tool, not a diagnosis.