Fungal Culture, Dermal
Use
The Fungal Culture, Dermal test is useful for the recovery and identification of dermatophyte fungi from infected specimens such as hair, skin, and nails. Dermatophytic fungi are a common cause of fungal infections in these keratinized tissues. Identification of these organisms allows for accurate diagnosis and appropriate treatment. The test incorporates several methodologies such as plating on mycobiotic agar and using MALDI-TOF mass spectrometry for species identification, when applicable, to provide comprehensive detection and identification of fungal species.
Special Instructions
Specimen source (anatomic body site) is required for the test. Specimens should arrive within 7 days of collection. Petri dishes should be securely taped for transport to prevent specimen loss. A Microbiology Test Request form (T244) must be completed and sent with the specimen if not ordered electronically.
Limitations
This test may not be able to fully identify all types of fungi, particularly if the fungal population is not viable or if contamination has occurred. Inappropriate specimen collection and handling can result in diagnostic confusion. Fungi that are not dermatophytes or yeast may not be reliably identified without additional testing. The negative results are only issued after 30 days, which could delay diagnosis if rapid identification is needed.
FDA ApprovedNew York Approved
Methodology
Culture-based
Biomarkers
LOINC Codes
- 580-1
Result Turnaround Time
30-35 days
Related Documents
For more information, please review the documents below
Specimen
Hair
Volume
10 to 12
Minimum Volume
Not provided
Container
Dry sterile container or specimen collection envelope
Collection Instructions
Using forceps collect affected hairs with base of the shaft intact.
Causes for Rejection
Charcoal, wooden shaft, or dry swab; Agar plate; Blades from scalpel or razor
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 7 days |