Hair perforation test

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The hair perforation test, also known as an in vitro hair perforation test, is a laboratory test used to help distinguish the isolates of dermatophytes, such as Trichophyton mentagrophytes and its variants.[1] The test is performed by placing an organism into a petri dish containing water, yeast extract, and hair. The Mayo Clinic's mycology laboratory has identified five common dermatophytes; Microsporum gypseum, Microsporum canis, Trichophyton rubrum, Trichophyton mentagrophytes, and Trichophyton tonsurans.[2]


  1. ^ "Hair Perforation Test for Dermatophytes". School of Molecular & Biomedical Science. The University of Adelaide. Retrieved 2 January 2010. 
  2. ^ Caddell, Jeremy R (2002). "Differentiating the dermatophytes". CLINICAL PRACTICE: MICROBIOLOGY. Clinical Laboratory Science. pp. 15(1):13. Retrieved 2 January 2010.