Diagn Microbiol Infect Dis. 1990 Jul-Aug;13(4):337-9.

A comparison of calcofluor white, potassium hydroxide, and culture for the laboratory diagnosis of superficial fungal infection.

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Department of Microbiology, Victoria General Hospital, Halifax, Nova Scotia, Canada.

Abstract

A total of 207 skin scrapings were prospectively studied using potassium hydroxide (KOH), calcofluor white (CW), and culture to determine the clinical usefulness of each microscopic method. For dermatophytes (prevalence 13.2%), CW had a sensitivity of 92% and a specificity 95%, giving a positive predictive value of 74% and negative predictive value of 99%. KOH had a sensitivity of 88% and a specificity of 95%, giving a positive predictive value of 73% and a negative predictive value of 98%. CW was simple, rapid, and easy to read. For dermatophyte infection, CW results are as useful as KOH results.

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Diagn Microbiol Infect Dis. 1991 Sep-Oct;14(5):457-8.

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A comparison of calcofluor white, potassium hydroxide, and culture for the laboratory diagnosis of superficial fungal infection.

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