Typical Thalassemia
Mean Corpuscular Volume (MCV) in fL: 70; Red Blood Cell (RBC) Count in millions/µL: 5.5
Mentzer Index: 12.72727273; Interpretation: Suggestive of Thalassemia
Mentzer Index Calculator
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Calculates the Mentzer Index to help differentiate between iron deficiency anemia and thalassemia trait.
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How To Use
How to use this calculator
Start with your values, or try a preset.
Step 1
Enter Mean Corpuscular Volume (MCV) in fL and Red Blood Cell (RBC) Count in millions/µL in the units shown.
Step 2
Read Mentzer Index and Interpretation in the results panel. Results update as you change the inputs.
Step 3
Choose a preset to load an example, then adjust the values for your situation.
Worked Examples
Example calculations
See the inputs and their calculated results.
Mild Thalassemia
Mean Corpuscular Volume (MCV) in fL: 75; Red Blood Cell (RBC) Count in millions/µL: 5
Mentzer Index: 15; Interpretation: Suggestive of Iron Deficiency Anemia
Iron Deficiency Anemia
Mean Corpuscular Volume (MCV) in fL: 85; Red Blood Cell (RBC) Count in millions/µL: 4.5
Mentzer Index: 18.88888889; Interpretation: Suggestive of Iron Deficiency Anemia
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Important
Use the result as an estimate and confirm any medical decisions with a qualified professional.