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UIBCug/dL

UIBC is the portion of transferrin that is not currently carrying iron.

See your own UIBC on its range.

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What UIBC measures

UIBC is the portion of transferrin that is not currently carrying iron.

If your UIBC is low

UIBC below the range means transferrin is mostly loaded, commonly associated with iron overload or inflammation.

Commonly associated with

Worth asking your clinician: How ferritin and saturation look.

If your UIBC is high

UIBC above the range means more empty transferrin, commonly associated with low iron stores.

Commonly associated with

Worth asking your clinician: Whether ferritin confirms low iron.

Typical reference range

GroupTypical range
Adults131 – 425 ug/dL

Typical adult values used by many US labs. Your own report prints the range your lab validated for its method, and that range is the one that counts. Labwise always uses the printed range first.

If it is within range

Your UIBC is within the range printed by your lab.

Also listed as

Unsaturated Iron Binding Capacity, Iron Binding Capacity, Unsaturated

Related tests

This page is general information about what a laboratory test measures and what results outside a reference range are commonly associated with. It is not medical advice, does not diagnose any condition and does not replace your clinician. Discuss your results with your healthcare provider.