What is the normal osmolarity value for plasma and other body fluids?
The normal osmolarity value for plasma and other body fluids ranges from 270 to about 300 mOsm/L. The body functions best when the osmolarity of the fluids in all body fluid spaces is close to 300 mOsm/L. When all body fluids have this particle concentration, the body fluids are isosmotic to each other. Another term with the same meaning is isotonic (also called normotonic).