extracellular fluid volume
the fraction of body water not in cells, about 20% of body weight; it consists of plasma water (about 4% of body weight), water between cells (interstitial water-lymph, about 15% of body weight), and water in dense bone and connective tissue (about 1% of body weight).
See Also: intracellular fluid
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Examples: glitazone, GI cocktail, etc.