Latent Autoimmune Diabetes Challenging Case

A 39-year-old man presents with polyurea and polydipsia for the past 2 months. The patient had no known family history of diabetes but did have a personal history of Grave's disease which was treated with radioactive iodine. His only medication is levothyroxine. His blood pressure is 120/78 mmHg, and his BMI is 24 kg/m. His physical examination findings are unremarkable.