DOI: 10.1373/clinchem.2012.194720


A previously healthy 4-year-old girl presented with a 2-day history of severe nausea, vomiting, and diarrhea. Her symptoms began with diffuse abdominal pain followed by alternating episodes of vomiting and nonbloody diarrhea. There were no reports of sick contacts, recent travel, camping, or unusual food or water consumption.