Test Details

Mnemonic

FNST

Ordering Code

3700031

CPT-4 Code(s)

87206 (Sputum, Tissue, Fluid), or 87220 (Skin, Hair, Nails)

Specimen Information

Collect

Skin, hair, nails, fluid, bronchial lavage or sputum

Specimen Preparation

Send in sterile leak proof container. Other sources may be sent in Amies gel or liquid transport system.

Alternate Specimen

Air dried smears other than stool sent in a slide holder transport system

Transport Temperature

Refrigerated

Rejection Criteria

Smears fixed with cytology fixative, excessively bloody samples, DNA probe transport device, viral transport medium, stool, broken slides

Stability

Skin, hair, nails
Room temperature: 14 days
Refrigerated: 14 days
Frozen: Unacceptable

Swabs, smears
Room temperature: 72 hours
Refrigerated: 72 hours
Frozen: Unacceptable

Fluid, BAL, sputum
Room temperature: Not acceptable
Refrigerated: 72 hours
Frozen: Unacceptable

Methodology

Microscopic exam, Calcofluor White Stain, Potassium Hydroxide (KOH)
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Reference Range

See report
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Performing Laboratory

Quest Valencia
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