Review Question - QID 215096

A 34-year-old G0P0 woman presents to the clinic with a few days of pelvic pain that has not improved, fevers, chills, and foul-smelling vaginal discharge. She has no significant past medical history, has never had surgery, and does not take any medications. She reports having had sexual intercourse with 7 partners in the past 2 years with intermittent use of barrier protection. She denies smoking cigarettes or drinking alcohol, but has a history of intravenous drug use, which was last used 1 year ago. Her temperature 38.0°C (100.4°F), blood pressure is 129/85 mmHg, pulse is 95/min, respirations are 15/min, and oxygen saturation is 99% on room air. Pelvic exam is notable for cervical motion tenderness. The patient is treated with azithromycin and ceftriaxone for the suspected diagnosis. In addition to these treatments, screening for which of the following would be most appropriate for this patient?