Mentzer Index

Differentiate iron deficiency from thalassemia. MCV/RBC.

Red Cell Indices

Mcv

Rbc

×10¹²/L

Mentzer Index

Mentzer Index12.9Ratio

DifferentialSuggests Thalassemia Trait

The high RBC count for the cell size suggests a beta-thalassemia carrier status.

Clinical Pattern

Cut-off Values

< 13Thalassemia Trait

> 13Iron Deficiency

Disclaimer: This tool is for informational purposes only and is not a substitute for professional medical advice.

About this calculator

Overview

Mentzer = MCV / RBC count. <13 suggests iron deficiency. >13 suggests thalassemia trait. Useful in microcytic anemia.

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Pro Tips

Fun Facts

Formula: Mentzer Index = MCV / RBC (million/µL)