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Recovery and identification of dermatophyte fungi from hair, skin, and nail infection specimens
When this test is ordered, the reflex test may be performed and charged.
Fungal infections of keratinized tissues (hair, skin, nails) can be caused by dermatophytic fungi belonging to the genera Epidermophyton, Microsporum, and Trichophyton. Opportunistic superficial infections resembling dermatophytoses may be caused by yeasts or by unrelated filamentous fungi that are normally saprobes or plant pathogens. Dermatophytes are usually unable to penetrate deeper tissues. Infection may range from mild to severe.
If positive, fungus or yeast will be identified.
Positive cultures are reported with organism identification.
Negative reports are issued after 30 days incubation.
Aseptic techniques should be used when collecting specimens to minimize contamination.
For optimal recovery of organisms, sufficient clinical material should be collected.
Borman AM, Summerbell RC: Trichophyton, Microsporum, Epidermophyton and agents of superficial mycoses. In Manual of Clinical Microbiology. 11th edition. Edited by JH Jorgensen, MA Pfaller, KC Carroll, et al. Washington DC. ASM Press, 2015, pp 2128-2152