Medical Definition of Polycythemia

Our Polycythemia (High Red Blood Cell Count) Main Article provides a comprehensive look at the who, what, when and how of Polycythemia (High Red Blood Cell Count)

Polycythemia: Too many red blood cells. The opposite of anemia. polycythemia formally exists when the hemoglobin, red blood cell (RBC) count, and total RBC volume are all above normal.

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Last Editorial Review: 5/13/2016

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