MSFinals-1732
A 25-year-old woman visits her primary care physician (PCP) complaining of yellow vaginal discharge, abnormal vaginal odor, vulvar itching, and pain while urinating. During the examination, the PCP notices a purulent discharge and a patchy erythematous lesion on the cervix. The PCP suspects Trichomonas vaginalis as the possible diagnosis. What would be the most suitable investigation to assist in the diagnosis of T. vaginalis for this patient?