Serum Osmolality, Osmolarity Calculator
Na (Sodium):
mEq/L
Blood Urea Nitrogen:
Glucose:
Ethanol (EtOH):
Serum Osmolality:
mOsm/Kg


Serum Osmolality Calculator Formula:

   Osm = 2 * Na + BUN / 2.8 + glucose / 18 + EtOH/4.6

Where:

   Na: Blood Sodium Level, mEq/L
   BUN: Blood Urea Nitrogen Level, in mg/dL
   glucose: Bood Glucose Level, in mg/dL
   EtOH: Bood Ethanol Level, in mg/dL

Normal serum osmolality is 285-295 mOsm/kg

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