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Hematocrit blood test: what your result means
Hematocrit measures the proportion of blood volume made up of red blood cells. It is a key marker of blood concentration and oxygen transport.
- Category
- Complete blood count
- Standard unit
- L/L
What does high hematocrit mean?
Higher values may suggest dehydration or increased red cell concentration. What counts as high depends on the reference range printed on your lab report, because ranges differ between laboratories.
What does low hematocrit mean?
Lower values may suggest anemia or dilution of blood volume. What counts as low depends on the reference range printed on your lab report, because ranges differ between laboratories.
Hematocrit units and conversion
Mediki shows hematocrit in L/L. Labs may report it in other units; Mediki converts them automatically so results from different labs line up on one chart.
Why track hematocrit over time?
A single hematocrit result is a snapshot. Comparing it with your earlier tests shows whether a value is stable, slowly drifting, or responding to a change in treatment or lifestyle, which is often more useful than one number on its own.
Read our guide on how to read blood test results to understand reference ranges, flags and units.
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Medical disclaimer: This page is general information, not medical advice. Reference ranges differ between laboratories, and only a doctor can interpret your results in the context of your health.