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
