Hematocrit Test
The percentage of your blood made up of red blood cells.
What is Hematocrit?
The percentage of your blood made up of red blood cells.
Hematocrit Reference Range
These are the typical adult reference ranges used by major US labs. Your report will include the specific range used by the lab that processed your sample.
| Population | Range |
|---|---|
| Male, age 18+ | 38.8 – 50.0 % |
| Female, age 18+ | 34.9 – 44.5 % |
Reference ranges are educational. Always interpret your result with the specific range printed on your lab report and discuss anything outside the range with a clinician.
What your Hematocrit result may mean
Often reflects dehydration, lung disease, or living at high altitude.
Commonly associated with anemia, recent blood loss, or nutritional deficiencies.
Educational only — not a diagnosis. Many factors can influence a single result. Discuss anything that concerns you with a healthcare provider.
Sources
Related Blood Health biomarkers
Markers commonly tested alongside Hematocrit.
Frequently asked
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