This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
Which of the following condition is most likely to be associated with vaginal pH of 4 : September 2009 
Select and explain. 
A. Atrophic vaginitis, B. Trichomanas vaginatis, C. Candidal vaginitis, D. Gardenella vaginitis
C: Candidal vaginitis
Answer: C: Candidal vaginitis 
Explanation: 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.