Delta-osmolality

Isopropyl alcohol is about twice as toxic as ethanol and should therefore not be administered orally isopropyl alcohol also has an unpleasant taste. Symptoms of isopropyl alcohol toxicity are similar to those for ethanol except that isopropyl alcohol has no initial euphoric action and gastritis and vomiting are more prominent see Alcohol. Delta osmolality may be useful as rapid screen test to identify patients at risk of complications from ingestion of isopropyl alcohol. The lethal oral dose is estimated to be about 120-250 mL although toxic symptoms may be produced by 20 mL. 

Monaghan MS, Ackerman BH, Olsen KM, et al. Use of delta osmolality to predict serum isopropanol and acetone concentrations. Pharmacotherapy 1993 13(1) 60-63. 

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