A vaginal swab is a medical test where a doctor or nurse gently collects a small sample of cells from inside a woman's vagina. It is done to check for infections or other health conditions. Full definition
An alternative method is to have mouth and vaginal swabs tested for living herpes virus or virus - related protein (FA test or PCR test). (2ndchance.info)
Fredricks and UW's McClelland were able to obtain frozen samples of vaginal swabs taken, in some cases, as far back as 2004. (sciencedaily.com)