Osmolarity vs. Osmolality
Posted by Laura on September 30, 2009
Measurement of concentration of solution can be measured in milliosmoles per liter or per kilogram in blood and urine. Osmolality is used more often in clinical practice. Normal serum Osmolality is 275 to 300 mOsm/kg.
Osmolarityis the number of osmoles of solute per literof solution (osmol/L).
Osmolalityis a measure of the osmoles of solute per kilogramof solvent (osmol/kg)
Normal urine osmolality is 250 to 900 mOsm/kg. Sodium in our ECF osmolaity holds water. (where ever sodium goes/water flows)
Water specific gravity is ???? 1
Urine specific gravity is ????1.010 to 1.025
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