VMD-0210
QUESTION
Skin scrapings for diagnosis of the dermatitis is taken in?
OPTIONS
(A) 10% KOH or NaOH
(B) 20% Ca(OH)2
(C) 10% Ca(OH)2
(D) CuSO4
ANSWER
(A) 10% KOH or NaOH
EXPLANATION
Skin scrapings for fungal examination are commonly cleared with about 10% potassium hydroxide or sodium hydroxide, which dissolves keratin and allows fungal elements or other structures to be visualized microscopically. Calcium hydroxide and copper sulfate are not standard clearing media for this diagnostic purpose.
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