Mainly a clinical diagnosis
Assess airway first to determine need for intubation
POC glucose
EKG - look for widened QRS, prolonged QTc
Basic labs
Urine tox screen
Tianeptine toxicity
Absinthe
Carbamate toxicity
Barbiturates
Valproic acid toxicity
Benzodiazepines
Mescaline toxicity
Flunitrazepam 