Mentzer Index Calculator
Differentiate β-thalassaemia trait from iron deficiency anaemia in a microcytic patient — MCV ÷ RBC count. A first-line discriminator used in premarital and antenatal screening across the GCC, Mediterranean and Asia.
fL
×10¹²/L
Formula: Mentzer Index = MCV (fL) ÷ RBC (×10¹²/L, i.e. millions/µL). < 13 → thalassaemia trait · > 13 → iron deficiency.
Enter MCV and RBC count from the CBC to calculate the Mentzer Index.
★ DoctorScribe — AI Medical Scribe
From CBC to a complete anaemia work-up note
Dictate the counts and DoctorScribe structures the microcytic-anaemia assessment — indices, differential and next investigations — in seconds.
Clinical Disclaimer: The Mentzer Index only applies to a microcytic anaemia (low MCV) and is a screening discriminator, not a diagnosis. It can mislead when iron deficiency and thalassaemia trait coexist. Always confirm with ferritin / iron studies and HbA₂ (haemoglobin electrophoresis or HPLC). Always verify against your local prescribing reference and apply clinical judgment.
Blood counts, interpreted as you chart
DoctorScribe captures the full haemogram from your dictation and structures anaemia work-ups — indices, iron studies and follow-up — straight into the note.
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