Review Question - QID 214920

A 65-year-old man presents to a primary care clinic for a routine health maintenance visit. His only complaint is a mild, non-productive cough that developed after a viral infection 2 weeks ago. His medical history includes hypertension, coronary artery disease, diabetes, gastrointestinal bleeding, and benign prostatic hypertrophy. His medications are lisinopril, metoprolol, atorvastatin, metformin, and tamsulosin. He has no family history of cancer and was born in the United States. He has a 45-pack-year history of smoking but quit 20 years ago. He has never used illicit drugs. A colonoscopy performed 5 years ago was normal. His temperature is 99.0°F (37.2°C), blood pressure is 124/88 mmHg, pulse is 74/min, and respirations are 16/min. Physical examination is otherwise unremarkable. In addition to administering the seasonal influenza vaccine, which of the following is the most appropriate screening test to order?