Calculated Osmolality
Na
unit
mg/dL
mmol/L
BUN
unit
mg/dL
mmol/L
Glucose
unit
mg/dL
mmol/L
R e s u l t s
mOsm/kg serum H20
? ? ?
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Calculated Osmolality
Calculated osmolality = 2 × Na[+] + glucose/18 + BUN/2.8