Fluid compartments

[KB website]

Compartments

Compartments in % of total body water

• ECF = 45%
  * Plasma = 7.5%
  * ISF = 20%
  * Dense CT = 7.5%
  * Bone = 7.5%
  * Transcellular = 2.5%
• ICF = 55%

Compartments in Litres (in 70kg male)

• ECF = 19 L
  * Plasma = 3.2 L
  * ISF = 8.4 L
  * Dense CT = 3.2 L
  * Bone = 3.2 L
  * Transcellular = 1L
• ICF = 23 L