Elevated Osmolal Gap: Sensitivity and Specificity
Introduction:
None written. Excerpt from the entry in Ethylene Glycol Poisoning:
Using equation: OR (in US units) -
Using equation:
Osmc = 2*Na(mEq/L) + BUN(mmol/L) + glucose(mmol/L) + 1.25*ethanol(mmol/L)
Osmc (mOsm/kg) = 2(Na+) + [BUN/2.8] + [glucose/18] + 1.25*[ethanol (mg/dL)/4.6]
Normal is <= 10 mOsm/kg. This is for identifying patients requiring an antidote for overdose.
Associated Diagnoses:
85% sensitive, 50% specific