Sehgal Index: normal range and what it means
Another red-cell index used in anaemia screening.
Normal range
Adult reference range.
- Thalassaemia trait likely< 972 index
- Iron deficiency likely≥ 972 index
What it measures
Another discriminant index for small red cells, squaring MCV and dividing by red cell count. It is read alongside Mentzer rather than instead of it.
What moves it
Another calculated screening index for small red cells, used the same way and with the same caveat.
How to bring it into range
Useful in populations where thalassaemia trait is common, which includes much of the Mediterranean and the Gulf. Confirm properly before concluding anything.
How fast it responds
It follows the underlying cause.
Also reported as: sehgal
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Common questions
- What is a normal Sehgal Index level?
- Thalassaemia trait likely: < 972 index. Adult reference range.
- What does a high Sehgal Index mean?
- A value above the reference band means Sehgal Index is outside the range typical for a healthy adult. A single reading is rarely conclusive on its own — what matters is the trend across draws and the other markers around it, which is why HealthOS reads the whole panel together rather than one number at a time.
- How do I improve my Sehgal Index?
- Useful in populations where thalassaemia trait is common, which includes much of the Mediterranean and the Gulf. Confirm properly before concluding anything.
More in Complete Blood Count
Reference ranges are general-population guidance compiled from common clinical laboratories, not a diagnosis. Lab-to-lab ranges differ. Always read your results with your doctor.