🩸 Iron Deficit (Ganzoni Formula)
Calculate the total iron deficit for replacement with the Ganzoni formula.
Iron Deficit (Ganzoni Formula)
Weight (kg)
Current haemoglobin (g/dL)
Target haemoglobin (g/dL)
When to use
Plan iron replacement (especially intravenous) in iron-deficiency anaemia.
How it works
Deficit (mg) = weight × (target − actual Hb) × 2.4 + iron stores (500 mg, or 15 mg/kg if < 35 kg).
Key points
- Includes correction of anaemia plus replenishment of stores.
- Dose IV iron per the chosen product's label.
- Recheck iron studies after replacement.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.