Which statement best describes ferritin levels in inflammatory states?

• A. Elevated ferritin can reflect inflammation or iron overload and limit specificity.
• B. Ferritin is a direct measure of iron saturation.
• C. Ferritin levels rise only with iron deficiency.
• D. Ferritin is a perfect marker of iron status regardless of inflammation.

Answer: (A)

Ferritin acts as an acute‑phase reactant as well as an iron storage protein. In inflammatory states, cytokines stimulate ferritin production, so serum ferritin can rise even when iron stores are low. This makes ferritin less specific for iron status during inflammation: it can reflect inflammation or iron overload rather than true iron sufficiency. Because of this, ferritin alone isn’t a reliable indicator of iron status when inflammation is present; its interpretation should be coupled with inflammatory markers (like CRP) and other iron indices (such as transferrin saturation or soluble transferrin receptor). Ferritin is not a direct measure of iron saturation, and its levels do not increase only with iron deficiency, nor is it a perfect marker regardless of inflammation.