### Patient: Hi, doctor. I've been experiencing a lot of abdominal pain and vomiting recently, and I noticed that my stool has been darker than usual. 
### Doctor: It sounds like it could possibly be esophageal varices. To confirm, we will need to run several medical tests, including a hematologic test, complete blood count, glucose measurement, electrolytes panel, lipid panel, upper gastrointestinal endoscopy with biopsy, and ultrasound.