Electrolytes

Plasma osmolality + osmolar gap

Calculated Posm = 2 Na + glucose/18 + BUN/2.8. Gap = measured − calculated.

osmolalitytoxic alcohols

Required inputs

  • Na (mEq/L)
  • Glucose
  • BUN
  • Measured Osm (mOsm/kg)
  • Ethanol (mg/dL)

Equation or source

Krasowski MD. BMC Clin Pathol 2012;12:1.

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