A potassium hydroxide (KOH) test is done to determine whether a
fungus is causing a skin infection. Samples from an infected area are treated
with KOH, which dissolves skin cells and leaves behind fungus cells (if any are
present) that can been seen with a microscope.
The KOH test may be used to diagnose fungal infections, such as
thrush, tinea versicolor, and ringworm.
E. Gregory Thompson, MD - Internal Medicine & Randall D. Burr, MD - Dermatology
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The Health Encyclopedia contains general health information. Not all treatments or services described are covered benefits for Kaiser Permanente members or offered as services by Kaiser Permanente. For a list of covered benefits, please refer to your Evidence of Coverage or Summary Plan Description. For recommended treatments, please consult with your health care provider.