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Total Iron Binding Capacity

TIBC Maximum Iron Binding Capacity
Serum (SST) µmol/L

About this test

Indirect measure of transferrin concentration; the maximum amount of iron that transferrin can bind. Inversely related to iron stores in most circumstances.

Reference Ranges

Sex Age Range Notes
All ≥ 18 yrs 45 – 72 Adult

Clinical Interpretation

Low / Decreased
Low TIBC — iron overload, anaemia of chronic disease, malnutrition, liver disease.
High / Increased
Elevated TIBC — iron deficiency (transferrin synthesis upregulated), pregnancy.

Related Tests

Serum Iron Transferrin Saturation Ferritin
Specimen
Serum (SST)
Reporting Unit
µmol/L
Category
⚙️ Iron Studies

⚠ Clinical Note
Reference ranges are indicative. Always interpret results in the context of the individual patient and local laboratory reference intervals, which may vary.