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Culture, Fungus, Skin, Hair Nail with Direct Fluorescent/KOH [4605X]
Test Code13303
CPT Codes
87101, 87220
Includes
Fungal smear and culture
If culture is positive, then identification will be performed at an additional charge (CPT code(s): 87106 or 87107).
If the organism cannot be identified by the original method or if there are multiple organisms, identification by DNA sequencing may be performed at an additional charge (CPT code(s): 87153).
If culture is positive, then identification will be performed at an additional charge (CPT code(s): 87106 or 87107).
If the organism cannot be identified by the original method or if there are multiple organisms, identification by DNA sequencing may be performed at an additional charge (CPT code(s): 87153).
Preferred Specimen
Any amount of basal portions of infected hairs, scrapings from the active, peripheral edge of lesions and scrapings from recently invaded nail tissue collected in a sterile, leak-proof container, or
Dry swab collected in a sterile container, or
Swab collected in a bacterial transport medium
Dry swab collected in a sterile container, or
Swab collected in a bacterial transport medium
Minimum Volume
Any amount • 1 swab
Instructions
Remove hairs with forceps, scrape skin or scalp scales, clip nails and include keratin scrapings. Cleanse with alcohol before scraping. Cleanse feet and hands before collecting nails. Refrigeration is not recommended because it can inhibit dermatophytes.
Transport Temperature
Room temperature
Specimen Stability
Sterile container
Room temperature: 14 days
Refrigerated: See instructions
Frozen: Unacceptable
Transport swab
Room temperature: 72 hours
Refrigerated: See instructions
Frozen: Unacceptable
Room temperature: 14 days
Refrigerated: See instructions
Frozen: Unacceptable
Transport swab
Room temperature: 72 hours
Refrigerated: See instructions
Frozen: Unacceptable
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Specimens other than hair, skin or nails • Specimens transported in alcohol or formalin
Methodology
Microscopic Exam • Culture • Isolation and Identification
Setup Schedule
Set up: Daily; Report available: 28-42 days
Reference Range
See Laboratory Report
Clinical Significance
The prompt detection of fungus in clinical samples is extremely important for in-patient management. Disseminated fungal infections are increasing in prevalence, and fungus cultures are essential for the isolation and subsequent identification of the causative agents.
