I worked in a cytology lab (that's where they send the pap smears) in my checkered youth, so this much I know: a sample is taken for loose cells from both the vaginal wall and the cervix. A separate swab (think Q-Tip cotton swabs) is used for each. Get the tests, folks. They're a lot less uncomfortable and a lot less invasive of your tender young bodies than the cures. Why give a disease a head start?