Test Id : FDERM
Fungal Culture, Dermal
Useful For
Suggests clinical disorders or settings where the test may be helpful
Recovery and identification of dermatophyte fungi from hair, skin, and nail infected specimens
Reflex Tests
Lists tests that may or may not be performed, at an additional charge, depending on the result and interpretation of the initial 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
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
When this test is ordered, the reflex test may be performed at an additional charge.
Method Name
A short description of the method used to perform the test
Plated to Mycobiotic Agar
NY State Available
Indicates the status of NY State approval and if the test is orderable for NY State clients.
Reporting Name
Lists a shorter or abbreviated version of the Published Name for a test
Aliases
Lists additional common names for a test, as an aid in searching
Culture for Dermatophytes
Culture, Yeast
Dermatophytes
Fungus Culture
Mold
Mycology, Culture
Yeast Culture
50021-FDERM
Testing Algorithm
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
When this test is ordered, the reflex test may be performed at an additional charge.
Specimen Type
Describes the specimen type validated for testing
Varies
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.
ORDER QUESTIONS AND ANSWERS
| Question ID | Description | Answers |
|---|---|---|
| Q00M0020 | Specimen Source |
Specimen Required
Defines the optimal specimen required to perform the test and the preferred volume to complete testing
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.
Forms
If not ordering electronically, complete, print, and send a Microbiology Test Request (T244) with the specimen.
Reject Due To
Identifies specimen types and conditions that may cause the specimen to be rejected
| Charcoal, wooden shaft, or dry swab Agar plate Blades from scalpel or razor | Reject |
Specimen Stability Information
Provides a description of the temperatures required to transport a specimen to the performing laboratory, alternate acceptable temperatures are also included
| Specimen Type | Temperature | Time | Special Container |
|---|---|---|---|
| Varies | Ambient | 7 days |
Useful For
Suggests clinical disorders or settings where the test may be helpful
Recovery and identification of dermatophyte fungi from hair, skin, and nail infected specimens
Testing Algorithm
Delineates situations when tests are added to the initial order. This includes reflex and additional tests.
When this test is ordered, the reflex test may be performed at an additional charge.
Clinical Information
Discusses physiology, pathophysiology, and general clinical aspects, as they relate to a laboratory test
Fungal infections of keratinized tissues (hair, skin, nails) can be
Reference Values
Describes reference intervals and additional information for interpretation of test results. May include intervals based on age and sex when appropriate. Intervals are Mayo-derived, unless otherwise designated. If an interpretive report is provided, the reference value field will state this.
Negative
If positive, fungus or yeast will be identified.
Interpretation
Provides information to assist in interpretation of the test results
Positive cultures are reported with organism identification.
Negative reports are issued after 30 days incubation.
Cautions
Discusses conditions that may cause diagnostic confusion, including improper specimen collection and handling, inappropriate test selection, and interfering substances
No significant cautionary statements
Clinical Reference
Recommendations for in-depth reading of a clinical nature
Borman AM, Summerbell RC: Trichophyton, Microsporum, Epidermophyton and agents of superficial mycoses. In: Carroll KC, Pfaller MA, Landry ML, et al. Manual of Clinical Microbiology. 12th ed. ASM Press; 2019:2208-2233
Method Description
Describes how the test is performed and provides a method-specific reference
Specimens are plated on mycobiotic agar, which contains chloramphenicol and cyclohexamide to inhibit bacterial and saprobic fungal contamination. Cultures are incubated at 30 degrees C for 30 days. Identification of dermatophyte species is based on colony and microscopic morphology and polymerase chain-reaction (PCR), DNA sequencing or matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry, when applicable.(Hall L, Wohlfiel S, Roberts GD: Experience with the MicroSeq D2 large-subunit ribosomal DNA sequencing kit for identification of filamentous fungi encountered in the clinical laboratory. J Clin Microbiol. 2004 Feb;42[2]:622-626; Theel ES, Hall L, Mandrekar J, Wengenack NL: Dermatophyte identification using matrix-assisted laser desorption ionization-time of flight mass spectrometry. J Clin Microbiol. 2011 Dec;49[12]:4067-4071)
PDF Report
Indicates whether the report includes an additional document with charts, images or other enriched information
Day(s) Performed
Outlines the days the test is performed. This field reflects the day that the sample must be in the testing laboratory to begin the testing process and includes any specimen preparation and processing time before the test is performed. Some tests are listed as continuously performed, which means that assays are performed multiple times during the day.
Monday through Sunday
Report Available
The interval of time (receipt of sample at Mayo Clinic Laboratories to results available) taking into account standard setup days and weekends. The first day is the time that it typically takes for a result to be available. The last day is the time it might take, accounting for any necessary repeated testing.
Performing Laboratory Location
Indicates the location of the laboratory that performs the test
Fees :
Several factors determine the fee charged to perform a test. Contact your U.S. or International Regional Manager for information about establishing a fee schedule or to learn more about resources to optimize test selection.
- Authorized users can sign in to Test Prices for detailed fee information.
- Clients without access to Test Prices can contact Customer Service 24 hours a day, seven days a week.
- Prospective clients should contact their account representative. For assistance, contact Customer Service.
Test Classification
Provides information regarding the medical device classification for laboratory test kits and reagents. Tests may be classified as cleared or approved by the US Food and Drug Administration (FDA) and used per manufacturer instructions, or as products that do not undergo full FDA review and approval, and are then labeled as an Analyte Specific Reagent (ASR) product.
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
Provides guidance in determining the appropriate Current Procedural Terminology (CPT) code(s) information for each test or profile. The listed CPT codes reflect Mayo Clinic Laboratories interpretation of CPT coding requirements. It is the responsibility of each laboratory to determine correct CPT codes to use for billing.
CPT codes are provided by the performing laboratory.
CPT codes are provided by the performing laboratory.
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® Information
Provides guidance in determining the Logical Observation Identifiers Names and Codes (LOINC) values for the order and results codes of this test. LOINC values are provided by the performing laboratory.
| Test Id | Test Order Name | Order LOINC Value |
|---|---|---|
| FDERM | Fungal Culture, Dermal | 580-1 |
| Result Id | Test Result Name |
Result LOINC Value
Applies only to results expressed in units of measure originally reported by the performing laboratory. These values do not apply to results that are converted to other units of measure.
|
|---|---|---|
| FDERM | Fungal Culture, Dermal | In Process |