Version 2.77

Term Description

This term represents typical reducing substance assays that detect reducing substances in stool without (or before) the addition of HCl. These assays do not detect sugars that are not reducing, such as sucrose. A different code [LOINC: 57796-5] represents the stool reducing substance assay with the addition of HCl, which hydrolyzes sugars that are not typically reducing and converts them into a reducing form.
Source: Regenstrief LOINC

Part Description

LP15040-6   Reducing substances
A reducing sugar is any sugar that, in basic solution, forms an aldehyde or aketone. This allows the sugar to act as a reducing agent as in the Maillard and Benedict's reactions. Reducing sugars include glucose, fructose, glyceraldehyde, lactose, arabinose and maltose. All monosaccharides which contain ketone groups are known as ketoses, and those which contain aldehyde groups are known as aldoses. Sucrose and trehalose are not reducing sugars. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See for details. Source: Wikipedia, Reducing substance

Fully-Specified Name

Reducing substances

Additional Names

Short Name
Reducing Subs Stl Ql
Display Name
Reducing substances Ql (Stl)
Consumer Name Alpha Get Info
Reducing substances, Stool

Basic Attributes

First Released
Version 1.0j-a
Last Updated
Version 2.73
Change Reason
The PrThr property is used for LOINC terms whose results are reported using an ordered categorical scale, regardless of whether or not an internal threshold was used to make that determination. This change was approved by the Laboratory LOINC Committee in June 2016.
Order vs. Observation
Common Test Rank Get Info

Member of these Panels

LOINC Long Common Name
57795-7 Fecal hydrolysis panel - Stool
101803-5 Malabsorption Evaluation Panel - Stool

Member of these Groups Get Info

LOINC Group Group Name
LG194-7 Reducing substances|PrThr|Pt|Stool

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: Reduz. Verb. /ST
es-AR Spanish (Argentina) sustancias reductoras:concentración arbitraria:punto en el tiempo:materia fecal:ordinal:
es-ES Spanish (Spain) Substancias reductoras:PrThr:Punto temporal:Heces:Ord:
es-MX Spanish (Mexico) Sustancias reductoras:Presencia o umbral:Punto temporal:Heces:Ordinal:
et-EE Estonian (Estonia) Redutseerivad ained:PrThr:Pt:St:Ord:
Synonyms: Järgarvuline Juhuslik Roe
fr-CA French (Canada) Substances réductrices:Présence-Seuil:Temps ponctuel:Selles:Ordinal:
fr-FR French (France) Molécules réductrices:Présence/Seuil:Ponctuel:Selle:Qualitatif:
fr-BE French (Belgium) Substances réductrices:PrThr:Temps ponctuel:Selles:Ordinal:
it-IT Italian (Italy) Sostanze riducenti:PrThr:Pt:Feci:Ord:
Synonyms: Chimica Presenza o Soglia Punto nel tempo (episodio)
ko-KR Korean (Korea, Republic Of) 환원 물질:임의농도:검사시점:대변:순위척도:
nl-NL Dutch (Netherlands) reducerende stoffen:aanwezigheid:moment:feces:ordinaal:
Synonyms: ontlasting; feces
pt-BR Portuguese (Brazil) Substâncias redutoras:ACnc:Pt:Fezes:Ord:
Synonyms: ; Reducing Subs; Reduc subs; Reducing substance; Arbitrary concentration; Point in time; Random; Stl; Feces; Faeces; Bowel movement; Fecal; Faecal; Ql; Ordinal; QL; Qualitative; Qual; Screen; Chemistry
ru-RU Russian (Russian Federation) Восстанавливающие вещества:PrThr:ТчкВрм:Фекалии:Пор:
Synonyms: Порядковый Раскисляющие вещества Точка во времени;Момент
tr-TR Turkish (Turkey) İndirgeyici maddeler:MevcEşik:Zmlı:Dışkı:Srl:
Synonyms: Gaita; feçes Mevcut
zh-CN Chinese (China) 还原性物质:存在情况或阈值:时间点:大便:序数型:
Synonyms: 依次型;分类顺序型;定性的;序数型(或称等级型);性质上的;有序型;有序性分类应答;有序性分类结果;秩次型;等级型;筛查;顺序型 便;大肠运动;排便;粪便;肠运动 化学;化学检验项目;化学检验项目类;化学类;化学试验;非刺激耐受型化学检验项目;非刺激耐受型化学检验项目类;非刺激耐受型化学试验;非刺激耐受型化学试验类 存在情况;存在;存在与否;是否存在;阈值;界值;界限;阀值;临界值;存在情况(存在、存在与否、是否存在)或阈值(界值、界限、阀值、临界值) 时刻;随机;随意;瞬间 还原型 还原型物质;还原物质 还原型的 还原性的

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