Review Question - QID 215176

A 56-year-old man presents from prison with 1 month of subjective fevers, chills, cough, and night sweats. He noticed a gradual weight loss over the past year despite no changes to his diet or physical activity. He has never smoked cigarettes but does have a history of opiate use prior to incarceration. He does not take any medications. His temperature is 100.8°F (38.2°C), blood pressure is 142/88 mmHg, pulse is 78/min, and respirations are 12/min. Physical exam reveals a thin, ill-appearing man. Pulmonary auscultation reveals faint, inspiratory crackles in the right upper lobe. His chest radiograph is shown in Figure A. Which of the following is the most appropriate next step in management?