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Test Code FDERM Fungal Culture, Dermal

Reporting Name

Fungal Culture, Dermal

Performing Laboratory

Mayo Clinic Laboratories in Rochester

Useful For

Recovery and identification of dermatophyte fungi from hair, skin, and nail infected specimens

Method Name

Plated to Mycobiotic Agar


Shipping Instructions


Specimen must arrive within 7 days of collection.

 

Transport in petri dishes may result in loss of specimen. Securely tape petri dishes closed for transport.



Necessary Information


Specimen source is required.



Specimen Required


Note:

-Aseptic techniques should be used when collecting specimens to minimize contamination.

-For optimal recovery of organisms, sufficient clinical material should be collected.

 

Specimen Type: Hair

Container/Tube: Dry sterile container or specimen collection envelope

Specimen Volume: 10 to 12

Collection Instructions: Using forceps collect affected hairs with base of the shaft intact.

 

Specimen Type: Nails

Container/Tube: Dry sterile container or specimen collection envelope

Specimen Volume: Entire collection

Collection Instructions:

1. Wipe the nail with 70% alcohol using gauze (not cotton).

2. Clip away a generous portion of the affected area.

3. Collect material or debris from under the nail.

 

Specimen Type: Skin

Container/Tube: Dry sterile container or specimen collection envelope

Specimen Volume: Entire specimen

Collection Instructions:

1. Cleanse the affected area with 70% alcohol.

2. Gently scrape the surface of the skin at the active margin of the lesion, being careful to not draw blood.


Specimen Type

Varies

Specimen Stability Information

Specimen Type Temperature Time
Varies Ambient 7 days

Reject Due To

Charcoal, wooden shaft, or dry swab
Agar plate
Blades from scalpel or razor		 Reject

Reference Values

Negative

If positive, fungus or yeast will be identified.

Interpretation

Positive cultures are reported with organism identification.

 

Negative reports are issued after 30 days incubation.

Day(s) Performed

Monday through Sunday

Report Available

30 to 35 days

Test Classification

This test has been cleared, approved, or is exempt by the US Food and Drug Administration and is used per manufacturer's instructions. Performance characteristics were verified by Mayo Clinic in a manner consistent with CLIA requirements.

CPT Code Information

87101-Fungal culture, dermal

87106-Id MALDI-TOF Mass Spec Yeast (if appropriate)

87107-Id MALDI-TOF Mass Spec Fungi (if appropriate)

87107-Fungal identification panel A (if appropriate)

87107-Fungal identification panel B (if appropriate)

87150-Identification rapid PCR Coccidioides (if appropriate)

87150 x 2-Identification Histoplasma/Blastomyces, PCR (if appropriate)

87153-D2 fungal sequencing identification (if appropriate)

87150-Id, Candida auris Rapid PCR (if appropriate)

LOINC Code Information

Test ID Test Order Name Order LOINC Value
FDERM Fungal Culture, Dermal 580-1

 

Result ID Test Result Name Result LOINC Value
FDERM Fungal Culture, Dermal In Process

Forms

If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.

Reflex Tests

Test ID Reporting Name Available Separately Always Performed
FUNA Fungal Ident Panel A No, (Bill Only) No
FUNB Fungal Ident Panel B No, (Bill Only) No
LCCI Ident Rapid PCR Coccidioides No, (Bill Only) No
LCHB Id, Histoplasma/Blastomyces PCR No, (Bill Only) No
RMALF Id MALDI-TOF Mass Spec Fungi No, (Bill Only) No
RMALY Id MALDI-TOF Mass Spec Yeast No, (Bill Only) No
D2F D2 Fungal Sequencing Identification No, (Bill Only) No

Testing Algorithm

When this test is ordered, the reflex test may be performed at an additional charge.