A 41-year-old African American woman presents with abdominal pain, jaundice, and dark urine for 3 days. She had experienced several bouts of vomiting since the previous day. On the day her symptoms began, she had a dish of broad beans for breakfast. Her medical and family histories are unremarkable. She underwent a cholecystectomy at the age of 38. Her travel history is significant for a trip to Congo 5 months ago, where she stayed for 2 weeks. Currently, she is not on any medication. She only drinks socially, and does not have a history of IV drug abuse or sexual promiscuity.