Hematocrit (HCT)
Alternate Names : HCT
Definition
The hematocrit is the percent of whole blood that is comprised of red blood cells. The hematocrit is a measure of both the number of red blood cells and the size of red blood cells.
The hematocrit is almost always ordered as part of a complete blood count, which measures the number of red blood cells, the number of white blood cells, the total amount of hemoglobin in the blood, and the fraction of the blood composed of red blood cells (hematocrit).
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Why is the Test Performed?
The hematocrit indicates the proportion of cells and fluids in the blood.
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