Is basic red cell ferritin a more specific indicator than serum ferritin in the assessment of iron stores in the elderly?

Iron status was evaluated in 103 elderly institutionalized individuals using haemoglobin concentration, red cell indices, serum iron, serum transferrin, serum ferritin and basic red cell ferritin. Inflammatory processes were identified by measuring concentrations of orosomucoid and C-reactive protein in serum and leukocyte counts. Anaemia was present in 16.5% of the individuals. No serum ferritin values were in the range of depleted iron stores; however 6% of the elderly individuals presented basic red cell ferritin less than 3 attog/cell (3 x 10(-18) g/cell). Serum ferritin was positively correlated with markers of inflammation. Basic red cell ferritin measurement was not influenced by inflammation and may provide a reliable indicator of iron status in the elderly.