Mentzer Index
Screens microcytic anemia (iron deficiency vs thalassemia).
RESULT
Mentzer Index
What is Mentzer Index?
Screens microcytic anemia (iron deficiency vs thalassemia). Mentzer Index is intended for use in: Adults.
How to Use the Mentzer Index Calculator
- Enter Mean corpuscular volume (MCV) in fL.
- Enter RBC count in ×10⁶/µL.
- Click Calculate to see your result and interpretation.
Formula & Version
This calculator uses formula version 1.0, last reviewed September 2026.
Clinical Considerations & Limitations
- A screening tool only — definitive diagnosis of thalassemia trait requires hemoglobin electrophoresis; iron studies confirm iron deficiency.
References
- Mentzer WC Jr, Lancet 1973;1:882
Frequently Asked Questions
What is Mentzer Index?
Screens microcytic anemia (iron deficiency vs thalassemia).
Who is Mentzer Index intended for?
Adults. Always confirm applicability to your specific patient before use.
What are the limitations of Mentzer Index?
A screening tool only — definitive diagnosis of thalassemia trait requires hemoglobin electrophoresis; iron studies confirm iron deficiency.
What formula or reference does Mentzer Index use?
Mentzer WC Jr, Lancet 1973;1:882
Is Mentzer Index a diagnosis?
No. Mentzer Index produces a score or estimate to support clinical decision-making — it is not a diagnosis and should be interpreted alongside full clinical judgement.
Medical Disclaimer: Medical calculators are provided for informational and educational purposes only. Results should not be used as a substitute for professional medical advice, diagnosis, or treatment. Always verify results with a qualified healthcare professional.
