667-6

LOINC Code


LOINC code667-6
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

componentObservation
propertyPrid  =  Presence or identity:  Prid stands for “Presence or identity”, is used for assays that detect whether or not an analyte of a particular kind is present, and if it is, to identify the specific analyte.
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.
systemXXX
scaleNom  =  Nominal:  Nominal or categorical responses that do not have a natural ordering. (e.g., names of bacteria, reported as answers, categories of appearance that do not have a natural ordering, such as, yellow, clear, bloody.
methodKOH preparation

Additional Names

short nameID; Identity or presence; Infectious Disease; InfectiousDisease; Microbiology; Misc; Miscellaneous; Nominal; Other; Point in time; Potassium hydroxide preparation; Prep; Random; Spec; To be specified in another part of the message; UniversalLabOrders; Uns

Basic Attributes

classMICRO
type1  Laboratory
order vs. observationKOH Prep Spec
panel type159

History/Usage

first released
last updated2.78
last change typeNAM  - change to Analyte/Component

Related Names



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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