KOH (Fungus) Preparation
Test Code: KOH
CPT Code: 87210
Synonym
Potassium hydroxide (KOH) preparations
Specimen Container
Choose from the following specimen types and submit in Sterile Specimen Cup:
Corneal Scrapings
Tissue
Sputum (1 mL)
Skin
Vaginal
Nail
Hair
Corneal Scrapings
Tissue
Sputum (1 mL)
Skin
Vaginal
Nail
Hair
Specimen Handling
A physician or trained provider must collect KOH specimens.
Unacceptable Conditions
Swabs
Methodology
Wet Prep, Microscopic exam
Stability
Ambient: 48 hours Refrigerated: 48 hours Frozen: Unacceptable
Test Includes
Source
Budding Yeast
Other fungal elements, if observed
Budding Yeast
Other fungal elements, if observed
Reference Range Information
Presence of Yeast & hyphae.....................Quantitate
Absence of Yeast & hyphae.....................None Seen
Pseudohyphae...........................Reported if Present
QUANTITATING WET PREP ELEMENTS
Rare 1-4 per 10 High Power Fields (HPF)
Few 0-5 per HPF
Moderate 5-10 per HPF
Many > 10 per HPF
Absence of Yeast & hyphae.....................None Seen
Pseudohyphae...........................Reported if Present
QUANTITATING WET PREP ELEMENTS
Rare 1-4 per 10 High Power Fields (HPF)
Few 0-5 per HPF
Moderate 5-10 per HPF
Many > 10 per HPF
Schedule
Daily; All Shifts:
The McDowell Hospital
Transylvania Regional Hospital
NC Central Lab
The McDowell Hospital
Transylvania Regional Hospital
NC Central Lab
Turn Around Time
Same day
Department
Microbiology
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