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- Dictionaryhe·mat·o·crit/həˈmadəˌkrit/
noun
- 1. the ratio of the volume of red blood cells to the total volume of blood.
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noun
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The hematocrit (Ht or HCT), also known by several other names, is the volume percentage (vol%) of red blood cells (RBCs) in blood, measured as part of a blood test. The measurement depends on the number and size of red blood cells. It is normally 40.7–50.3% for males and 36.1–44.3% for females. It is a part of a person's complete blood count results, along with hemoglobin concentration, white bloo... Wikipedia