Abstract
In a survey to isolate dermatophytes from clinical specimens, Taplin's dermatophyte test medium and two commercial DTM products were compared with Sabouraud's dextrose agar containing cycloheximide and chloramphenicol. Though statistical differences and similarities were detected among the media under actual clinical conditions, the differences themselves could not be attributed to the medium, size of inoculum or other specific sources of variation because of unknown factors inherent in this approach. Therefore, a controlled quantitative test was made to compare DTM with commonly available mycological media using quantitated spore preparations of Trichophyton mentagrophytes. All media tested equally supported the growth of the dermatophyte as indicated by the statistical similarity among colony counts. Quantitation of number of spores produced did not differ among Taplin's DTM, Difco DTM, Pfizer DTM, and Sabouraud's plus antibiotics. Significantly fewer spores were produced on Littman's oxgall agar and significantly more on ink blue agar.
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