What percentage of white blood cells in blood is typically observed?

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Multiple Choice

What percentage of white blood cells in blood is typically observed?

Explanation:
White blood cells are a minor component of blood. In a typical healthy person, they make up less than 1% of blood volume—the buffy coat after centrifugation is only about that size. Most of blood is red blood cells (~45%) and plasma (~55%). So the correct percentage is less than 1%. The other numbers reflect red blood cells or plasma, not WBCs.

White blood cells are a minor component of blood. In a typical healthy person, they make up less than 1% of blood volume—the buffy coat after centrifugation is only about that size. Most of blood is red blood cells (45%) and plasma (55%). So the correct percentage is less than 1%. The other numbers reflect red blood cells or plasma, not WBCs.

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