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Hematocrit Blood Test

What is a hematocrit blood test?

The hematocrit blood test determines the proportion of red blood cells (RBC's) in the blood. The hematocrit is recorded as the percentage of volume of red blood cells in a blood sample. A blood sample is composed mainly of red blood cells and white blood cells suspended in blood serum. The hematocrit test indicates the percentage of blood by volume that is composed of red blood cells.

Picture of Red Blood Cells

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