Total Iron-binding Capacity (TIBC)
Total iron-binding capacity (TIBC) is most frequently used along with a serum iron test to evaluate people suspected of having either iron deficiency or iron overload. These two tests are used to calculate the transferrin saturation, a more useful indicator of iron status than just iron or TIBC alone. In healthy people, about 20-40% of available transferrin sites are used to transport iron.
The results of transferrin tests, TIBC, or UIBC are usually evaluated in conjunction with other iron tests.
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