Ferritin levels reflect iron stoes in normal individuals. A low serum ferritin level is an indicator of iron depletion. This assay is clinically useful in distinguishing between Iron deficiency anemia (low level) and anemia of chronic disease (normal or high level). It is also useful to assess iron overload conditions like Hemochromatosis. Ferritin is also an acute phase reactant.
Do not eat or drink anything except water at least 9 to 12 hours before the test.