Total Iron Binding Capacity-Reference Range

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A total iron binding capacity (TIBC) test is a type of blood test that detects the iron content in your bloodstream.

Normal values for the TIBC test can vary among laboratories. However, most laboratories define a normal range as 240 to 450 micrograms per deciliter (mcg/dL).

A total iron binding capacity value above 450 mcg/dL usually indicates that there’s a low level of iron in your blood. The causes include:

  • Lack of iron in the diet
  • Increased blood loss during menstruation
  • Pregnancy
  • A chronic infection

A total iron binding capacity value below 240 mcg/dL usually indicates that there’s a high level of iron in your blood. The causes include:

  • Iron or lead poisoning
  • Liver damage
  • Frequent blood transfusions
  • Hemolytic anemia
  • Sickle cell anemia
  • Hemochromatosis

Keywords: IBC; iron binding capacity test; total iron binding capacity (TIBC) test

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