<prompt> Which of the following condition is most likely to be associated with vaginal pH of 4 : September 2009Atrophic vaginitisTrichomanas vaginatisCandidal vaginitisGardenella vaginitis  <response>: Ans. C: Candidal Vaginitis Candida albicans is a gram positive yeast like microorganism and grows well in acidic medium. Vaginal pH remains normal 4.0-4.5 in candida infection whereas pH in excess of 4.5 should suggest possibility of Other bacterial vaginosis BV, trichomoniasis or mixed infections. 