Circulating red blood cell volume

The reserve of red blood cells is small, only about 3% of the blood circulation, so the fluctuation in the blood is small, the emergency is poor, and bone marrow hematopoietic replenishment is needed after blood loss. In pathological situations, this balance can be disrupted for a variety of reasons, leading to disease. Clinically, anemia can be diagnosed or differentially diagnosed by detecting multiple parameters of red blood cells.

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