Ganzoni Iron Deficit Calculator

Formula

Ganzoni (conventional): Iron deficit (mg) = Weight (kg) × [Target Hb − Current Hb] (g/dL) × 2.4 + iron stores.

SI equivalent: using Hb in g/L, multiply by 0.24 instead of 2.4. Stores: ≥35 kg → +500 mg; <35 kg → +15 mg/kg.

Why use Ganzoni

• Standardized IV iron dosing across indications.
• Allows conservative or CKD-adjusted Hb targets.
• Supports session planning per product limits.

Notes

Clamp ΔHb below zero to avoid negative doses. If Hb already at or above the target, the result equals the chosen iron store.

Always respect product-specific maximum single doses and local labeling.

Units

Enter Hb in g/dL or g/L. The calculator adapts the coefficient automatically.

• Conventional coefficient: 2.4 with Hb in g/dL
• SI coefficient: 0.24 with Hb in g/L
• Auto store rule: ≥35 kg → +500 mg; <35 kg → +15 mg/kg