Home Tests Total Iron Binding Capacity (TIBC)

Total Iron Binding Capacity (TIBC)

A total iron-binding capacity (TIBC) test measures the bloods ability to attach itself to iron and transport it around the body. A transferrin test is similar. If you have iron deficiency (a lack of iron in your blood), your iron level will be low but your TIBC will be high. If you have too much iron (for example, if you have a condition like haemochromatosis), your iron level will be high but your TIBC will be low or normal.