what does a koh (potassium hydroxide) prep help the nurse practitioner diagnose?
The KOH test might be done on the sample of vaginal discharge to check for yeast infection. If a woman has atrophic vaginitis, trichomoniasis, and bacterial vaginosis, then the pH level in the vagina is more than 4.5. Drops of KOH or potassium hydroxide are added to vaginal discharge.