Review Question - QID 213410

A 71-year-old man is brought to the emergency department by his daughter after she found him to be extremely confused at home. She says that he appeared to be fine in the morning; however, upon returning home, she found that he was slumped in his chair and was hard to arouse. She was worried that he may have taken too many medications and rushed him to the emergency department. His past medical history is significant for bipolar disorder and absence seizures. He does not smoke and drinks 4 alcoholic beverages per night on average. On physical exam, he is found to have a flapping tremor of his hands, pitting ankle edema, and gynecomastia. He does not appear to have any focal neurologic deficits. Which of the following lab findings would most likely be seen in this patient?