KOH prep tests are not performed for every rash. Instead, they are typically ordered when a fungal organism is suspected as ...

The nail scrapings will be used in tests, such as a potassium hydroxide (KOH) smear, or a fungal culture. The KOH test can be ...

Skin scraping in 10% KOH will demonstrate fungal hyphae. Infected hairs when examined under Wood’s light will fluoresce a green-yellow color. Treatment is as follows: C. Pityriasis (tinea ...