Normal 20-300 ng/mL Indications Diagnosing: Iron-deficiency anemiaH emochromatosis Monitor: Iron levels Description Ferritin is a protein that stores iron. It is formed in the liver spleen and bone marrow. Ferritin in the blood is usually proportional to stored ferritin. Ferritin is a more sensitive and specific test for identifying iron-deficiency anemia, however, it is usually measured in conjunction with total iron binding capacity and iron. What would cause increased levels? Inflammation Alcoholic liver disease Multiple blood transfusions Hemochromatosis What would cause decreased levels? Long term Gastrointestinal(GI) bleeding Iron-deficiency anemia Heavy menstrual bleeding