Hematocrit (Hct)
The percentage of blood volume made up of red blood cells. Closely related to hemoglobin.
Typical normal range
Men: 41–53% · Women: 36–46% %
If high ↑
Dehydration, polycythemia
If low ↓
Anemia, overhydration
What is a normal Hematocrit level?
A typical reference range is Men: 41–53% · Women: 36–46% %. Ranges vary between laboratories and can depend on age and sex, so compare your result with the range printed on your own report.
What does a high Hematocrit level mean?
Dehydration, polycythemia. A single result rarely gives a diagnosis on its own; your doctor will interpret it alongside your symptoms and other tests.
What does a low Hematocrit level mean?
Anemia, overhydration. Your doctor will interpret it alongside your symptoms and other tests.
About the Complete Blood Count (CBC)
A complete blood count looks at the cells in your blood: red cells that carry oxygen, white cells that fight infection, and platelets that help blood clot. It is one of the most commonly ordered tests and is often part of a routine check-up.
See your own Hematocrit result explained
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Analyze my results freeRelated markers in the Complete Blood Count (CBC)
Medical disclaimer: Reference ranges vary by laboratory, age, sex, and clinical context. This page is for educational purposes only and is not a diagnosis. Always discuss your results with a qualified healthcare professional.