system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 25-year-old woman is brought to the emergency department by her roommate with severe right lower quadrant pain for the last 8 hours. The pain is progressively getting worse and is associated with vomiting. When you ask the patient about her last menstrual period, she tells you that although she stopped keeping track of her cycle after undergoing surgical sterilization 1 year ago, she recalls bleeding yesterday. The physical examination reveals a hemodynamically stable patient with a pulse of 90/min, respiratory rate of 14/min, blood pressure of 125/70 mm Hg, and temperature of 37.0°C (98.6°F). The abdomen is tender to touch (more tender in the lower quadrants), and tenderness at McBurney's point is absent. Which of the following is the best next step in the management of this patient?
assistant
Urinary human chorionic gonadotropin (hCG)