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 32-year-old G1P0 woman at 27 weeks estimated gestational age presents for her first prenatal care appointment. She recently immigrated to the United States and didn’t receive any prenatal care in her country. Her blood pressure is 130/70 mm Hg, pulse is 85/min, and respirations are 16/min. Her BMI is 38.3 kg/m2. Physical examination is unremarkable except for normal pregnancy changes. Fetal ultrasound is performed and reveals fetal macrosomia. Which one of the following diagnostic tests is most likely to reveal the cause of this fetal abnormality?
assistant
Oral glucose tolerance test