Questions people ask about Ferritin Test

The ferritin test measures the body's iron stores and is commonly used to diagnose iron deficiency or iron overload. The provided context does not contain specific information about ferritin testing, so this answer is based on general medical knowledge. Ferritin is an acute-phase reactant, meaning its levels can rise with inflammation, infection, or liver disease, complicating interpretation. Low ferritin (<30 ng/mL) typically indicates iron deficiency, while elevated levels (>200 ng/mL in women, >300 ng/mL in men) may suggest hemochromatosis or other storage disorders. The evidence for its clinical utility is strong (human-strong), but results should always be interpreted alongside other labs (e.g., transferrin saturation, hemoglobin) and the patient's history. Caveat: ferritin can be falsely normal or elevated due to inflammation; a normal ferritin does not rule out iron deficiency in chronic disease. This answer is conservative because the provided context lacks ferritin-specific studies.