Ferritin is the complex formed by deferoxin and trivalent iron ions. The normal range of ferritin is 20-200 μg/mL for adult men and 15-150 μg/mL for adult women. 600 μg/mL of ferritin is mostly abnormally high. Abnormally high ferritin can be seen in a variety of causes: the first, commonly in patients with long-term red blood cell transfusions, such as chronic aplastic anemia patients, sometimes need long-term red blood cell transfusions, after massive blood loss of iron in red blood cells will be deposited in the body, combined with deferoxin eventually formed by the significantly higher ferritin. Secondly, in patients with acute inflammation, after infection and in patients with tumors, the concentration of ferritin in the body is also significantly increased. So ferritin 600 μg/mL more is seen in patients with long-term blood transfusion and in patients with acute inflammation, infection or certain tumors.