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MediumEndocrinologyType 2 Diabetes Mellitusus-abfmus-abimus-usmle-step-2us-usmle-step-3

A 55-year-old man with type 2 diabetes, A1c 10.8%, polyuria, and fasting glucose 315 mg/dL despite metformin 1,000 mg twice daily. What is the most appropriate next step?

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