Osmolar Gap Calculator Sponsored Advertising placement Osmolar Gap Calculator Clinical Decision Tool Calculates the osmolar gap from measured and calculated serum osmolality. Measured Serum Osmolality i Measured Serum Osmolality × Laboratory-measured osmolality is compared with calculated osmolality. Accepted units mOsm/kg Used by Osmolar Gap Calculator Clinical noteUse measurements drawn at the same time. ReferenceKraut JA, Kurtz I. Am J Kidney Dis. 2008;51:162–174. Learn more → mOsm/kg Sodium mmol/L Glucose mg/dL BUN mg/dL Ethanol (optional) mg/dL Calculate Osmolar Gap Calculator Clear Calculator ☆ Log in to save Save this calculator to your MDPDA account. + Add to Toolkit Log in to save incomplete calculator progress and return later. Log in to save progress Clinical Decision Support Only MediCalc calculators are intended to support qualified healthcare professionals and must not replace professional clinical judgement. Do not enter patient-identifiable information into Saved Progress. Read our Clinical Disclaimer Sponsored Advertising placement