Cheryl, an 80-year-old woman is brought to the clinic by her…
Cheryl, an 80-year-old woman is brought to the clinic by her daughter, who reports that her mother has experienced increasing difficulty with memory over the past year. She often forgets recent conversations, misplaces common items, and has gotten lost in familiar places. Additionally, she shows signs of poor judgment, such as giving away large sums of money to telemarketers, and has become withdrawn from social activities she once enjoyed. A mental status exam reveals impaired short-term memory, difficulty with word-finding, and disorientation to time. Which of the following is the most appropriate next step in the evaluation of this patient to confirm the diagnosis of Alzheimer’s disease?