Dermatophyte test medium
Dermatophyte test medium (DTM) is a specialized agar used in medical mycology.[1][2] It is based on Sabouraud's dextrose agar with added cycloheximide to inhibit saprotrophic growth, antibiotic to inhibit bacterial growth, and phenol red a pH indicator. The pH indicator is useful in distinguishing a dermatophyte fungus, which utilizes nitrogenous material for preferred metabolism, producing alkaline by-products, imparting a red color change to the medium. Typical saprotrophic fungi utilize carbohydrates in the medium producing acidic by-products and no red color change.
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Growth media / agar plates
Gram positive |
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Gram negative |
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- BAF agar
- Czapek medium
- Dermatophyte test medium
- Malt extract agar
- MMN medium
- Potato dextrose agar
- Sabouraud agar
- YEPD
- YM
- Blood agar
- Chocolate agar
- Columbia blood agar
- Letheen broth
- Lysogeny broth
- Nutrient agar
- Plate count agar
- Trypticase soy agar
- Tryptic soy broth
- Zobell's marine agar
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