TIBC
Total Iron Binding Capacity (TIBC) measures the maximum amount of iron that blood proteins (mainly transferrin) can carry. It helps evaluate iron status.
Category: Iron Studies
Also known as: tibc, total iron binding capacity, total iron-binding capacity, ukupni kapacitet vezivanja gvožđa
Reference range: 250–370 µg/dL (Source: ABIM)
Standard unit: µg/dL
High values may indicate
High TIBC may indicate iron deficiency anemia, as the body produces more transferrin to try to capture more iron.
Low values may indicate
Low TIBC may indicate iron overload (hemochromatosis), chronic inflammation, liver disease, or malnutrition.
Frequently asked questions
- What is a normal TIBC level?
- A typical reference range for TIBC is 250–370 µg/dL (source: ABIM). Reference ranges vary by laboratory, age, and sex, so always compare against the range on your own lab report.
- What units is TIBC measured in?
- TIBC is most commonly reported in µg/dL. Labs in different countries may use other units — you can convert between them with BloodId's blood test unit converter.
- Where do TIBC reference ranges come from?
- BloodId uses ABIM standard reference ranges and educational information from MedlinePlus (see our methodology). Reference ranges still vary by lab, age, and sex, so always compare against your own report.
- Can I track TIBC over time?
- Yes. Upload results from any lab and BloodId charts your TIBC over time against its reference range, so you can see whether the trend is rising, falling, or stable.