Hemosiderin

A form of iron-complexed to ferritin or other substances. This form of iron is not present in the blood and can be seen in tissue deposits and other sites. Hemosiderin is a major form of iron storage in the marrow and liver. Hemosiderin can increase abnormally in tissues or body fluids after hemorrhage. Hemosiderin is confirmed by stains for iron such as Prussian blue.