Office dermatologic testing: the KOH preparation

Am Fam Physician. 1991 Jun;43(6):2061-5.

Abstract

A potassium hydroxide preparation is used to confirm the diagnosis of a superficial fungal skin infection. Adding black or blue-black ink to the potassium hydroxide solution highlights fungal organisms and distinguishes them from surrounding cellular debris.

MeSH terms

  • Biopsy / methods
  • Candidiasis / diagnosis
  • Dermatomycoses / diagnosis*
  • Humans
  • Hydroxides*
  • Onychomycosis / diagnosis
  • Potassium Compounds*
  • Potassium*
  • Predictive Value of Tests
  • Tinea Capitis / diagnosis
  • Tinea Versicolor / diagnosis

Substances

  • Hydroxides
  • Potassium Compounds
  • Potassium
  • potassium hydroxide