The Claim
In patients with severe anion gap metabolic acidosis and alcohol use disorder, an elevated osmolar gap greater than 37 mOsm/kg is indicative of isopropyl alcohol and acetone presence, even after exclusion of methanol and ethylene glycol, and necessitates specific volatile alcohol testing when standard toxicology screens are negative.
What the research says
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In patients with severe metabolic acidosis and a history of alcohol use disorder, an osmolar gap above 37 mOsm/kg indicates the presence of isopropyl alcohol and acetone, even when methanol and ethylene glycol are not detected, and requires targeted testing for volatile alcohols if standard toxicology screens are negative.
See the scientific wording
Elevated osmolar gap (>37 mOsm/kg) in a patient with severe anion gap metabolic acidosis and alcohol use disorder may indicate the presence of isopropyl alcohol and acetone, even when methanol and ethylene glycol are ruled out, and should prompt specific volatile alcohol testing when standard toxicology screens are negative.
When someone drinks isopropyl alcohol, the liver turns it into acetone, a substance that increases the number of particles in the blood and worsens existing ketone buildup. This raises the osmolar gap and combines with other acids to cause severe blood acidity. Even if standard poison tests miss it, the high osmolar gap signals this specific toxin is present.
What the research says
1 studyIn a person with a history of heavy drinking who gets very sick with acid in their blood, a high osmolar gap (37.1 in this case) can mean they drank isopropyl alcohol — even if regular poison tests come back negative. Doctors should test specifically for this alcohol when they see these signs.
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Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.