Correct!
5. All of the above
Based on the diagnostic possibilities each of these should be obtained. His blood glucose was 127 g/dL. No methanol was detected in the serum. The urine was examined for oxalate crystals which are seen with ethylene glycol ingestion. None were found and no ethylene glycol was detected in the serum. His lactic acid level was 19.6 mg/dL. Additional laboratory values that returned negative included ASA, APAP and ethanol (consistent with his history of no substance use or abuse).
Based on this new information what is the most likely diagnosis? (click on correct answer to move to next panel)