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 ^*. 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):

$BV\; =\; \backslash frac\{PV\}\{1-HC\}$

External links

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

Blood