In which condition is ferritin most likely elevated independent of iron stores?

In which condition is ferritin most likely elevated independent of iron stores?

• A. Chronic infection
• B. Iron-deficiency anemia
• C. Heinz body disease
• D. Acute blood loss

Answer: (A)

Ferritin behaves as an acute-phase reactant, so its production rises during inflammation and infection regardless of how much iron is actually stored in the body. In chronic infection, inflammatory cytokines stimulate the liver to make more ferritin and to sequester iron, leading to elevated ferritin levels even when iron stores are not increased. This is why ferritin can be high in inflammatory states and can mask underlying iron deficiency. In contrast, iron-deficiency anemia reflects depleted iron stores, so ferritin tends to be low. Acute blood loss reduces iron stores and ferritin generally decreases accordingly. Heinz body disease involves red cell damage rather than a direct, consistent rise in ferritin independent of stores, so it doesn’t explain a ferritin elevation driven by inflammation.

Ferritin behaves as an acute-phase reactant, so its production rises during inflammation and infection regardless of how much iron is actually stored in the body. In chronic infection, inflammatory cytokines stimulate the liver to make more ferritin and to sequester iron, leading to elevated ferritin levels even when iron stores are not increased. This is why ferritin can be high in inflammatory states and can mask underlying iron deficiency.

In contrast, iron-deficiency anemia reflects depleted iron stores, so ferritin tends to be low. Acute blood loss reduces iron stores and ferritin generally decreases accordingly. Heinz body disease involves red cell damage rather than a direct, consistent rise in ferritin independent of stores, so it doesn’t explain a ferritin elevation driven by inflammation.