Assessment of iron stores in old people.

Iron deficiency is the commonest cause of anaemia in the old. Anaemia is a useful indicator of morbidity, occurring much more frequently in individuals referred to hospital. Isolated serum iron estimations are often misleading. A study of 34 cases in whom serum iron, iron-binding capacity and bone marrow were examined showed that the percentage saturation of the binding capacity remains a good method of assessing iron stores.