55318-0

LOINC Code


LOINC code55318-0
name
descriptionA KOH Preparation involves treating a specimen with KOH, a strong base that can make fungi and yeast more visible by partial dissolution of tissue cells, keratin, and other material. Fungal cells are resistant due to the high content of cellular chitin. KOH prep is generally a test for fungi, most often candida yeast, but others too, such as tinea capitis and other skin or nail fungal infections, even blastomycosis, etc. However, the KOH prep is also used to diagnose infections with mites (Demodex folliculorum in rosacea-like lesions and Sarcoptes scabiei in hyperkeratotic or crusted scabies) and sometimes even nematodes (in blue neck syndrome). [PMID:16766846]
statusACTIVE

Fully-Specified Name

componentFungus
propertyPrThr  =  Present or threshold:  The Property PrThr stands for “Presence or Threshold”, meaning either a) the actual presence or absence of an analyte, or b) that the amount of analyte detected is over some predetermined threshold.
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemBronchial
scaleOrd  =  Ordinal:  Ordered categorical responses, e.g., 1+, 2+, 3+; positive, negative; reactive, indeterminate, nonreactive.
methodKOH preparation

Additional Names

short nameBro; Fung; Fungal; Fungi; ID; Infectious Disease; InfectiousDisease; Lung; Microbiology; Ordinal; Point in time; Potassium hydroxide preparation; PR; Prep; Pulmonary; Pulmonology; Ql; Qual; Qualitative; Random; Respiratory; Screen

Basic Attributes

classMICRO
type1  Laboratory
order vs. observationFungus Bronch Q

Member of these Groups

LG34107-9Fungus|PrThr|Sys:ANYResp

History/Usage

first released
last updated2.73
last change typeMIN  - change to field other than name

Related Names

N

Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.

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