Hematology · Internal Medicine

Ganzoni Transfusional Iron Deficit calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Body weight (kg)

Actual hemoglobin (g/dL)

Target hemoglobin (g/dL)

Estimated iron stores (mg)

Enter estimated iron stores in mg; 500 mg is commonly used for adults in the Ganzoni equation when stores are depleted.

Result

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Formula inputs

Body weight (kg)Accepted range: 20 to 200
Actual hemoglobin (g/dL)Accepted range: 3 to 20
Target hemoglobin (g/dL)Accepted range: 3 to 20
Estimated iron stores (mg)Accepted range: 0 to 1000

Primary source

Ganzoni AM. Intravenous iron-dextran: therapeutic and experimental possibilities. Schweiz Med Wochenschr. DOI: 10.4414/smw.1970.04096. PMID: 5526103. Scope: iron deficit (mg) = body weight (kg) × (target Hb − actual Hb in g/dL) × 2.4 + iron stores (mg); stores often estimated 500 mg in men and 500 mg in women in the original approach. (1970)

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