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Blood volume is the volume of blood (both red blood cells and plasma) in a person's circulatory system. A typical adult male human has a blood volume of some five liters [1]. Blood volume is regulated by the kidneys.

Blood volume (BV) can be calculated given the hematocrit (HC; the fraction of blood that is red blood cells) and plasma volume (PV):

<math>BV = \frac{PV}{1-HC}</math>

[edit] External links

• http://www.cvphysiology.com/Blood%20Pressure/BP025.htm