Metabolic predictors of carbon monoxide poisoning

In a retrospective study of 54 carbon monoxide (CO) levels greater than 10%, we looked for correlations with glucose, electrolytes and anion gap. Electrolytes and anion gap were not found to be significant. We did find, however, that 8 out of the 12 CO levels greater than 25 had glucose values greater than 110. We, therefore, conclude that if a patient presents with the appropriate history or signs of vague CNS symptoms and an increased blood glucose, a measurement of CO should be considered.