MSFinals-1858

A 25-year-old woman presents to the GP with a three-day history of vaginal itching and thick, non-odorous white discharge. She had a similar complaint four months ago but has no other medical history. The patient is married and sexually active with her husband, and her menstrual cycle is regular, following a 28-day cycle. Vaginal pH testing shows a value of 4.3. What further tests should be conducted before initiating treatment?