Version 2.78

Status Information

Status
DISCOURAGED
Comment
Because there is a 3-fold difference in normal range between L>P and P>L methods, the use of the methodless term is not recommended.
Map-To Long Common Name Mapping Guidance
14803-1 Lactate dehydrogenase [Enzymatic activity/volume] in Body fluid by Lactate to pyruvate reaction
60017-1 Lactate dehydrogenase [Enzymatic activity/volume] in Body fluid by Pyruvate to lactate reaction

Part Descriptions

LP15033-1   Lactate dehydrogenase
Lactate dehydrogenase (LDH) is an enzyme (EC 1.1.1.27) present in a wide variety of organisms, including plants and animals. It catalyses the interconversion of pyruvate and lactate with concomitant interconversion of NADH and NAD+. As it can also catalyze the oxidation of hydroxybutyrate, it is occasionally called hydroxybutyrate dehydrogenase (HBD). Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, D-lactate (Wikipedia)

LP15033-1   Lactate dehydrogenase
Lactate dehydrogenase (LDH, or also called LD) is an oxidoreductase (LD: EC 1.1.1.27) and is the most important clinically of several dehydrogenases occurring in human serum. LDH catalyses the interconversion of pyruvate and lactate with concomitant interconversion of NADH and NAD. When disease, injury, or toxic material damages tissues, cells release LDH into the bloodstream. Since LDH is a fairly stable enzyme, it has been widely used to evaluate the presence of damage and toxicity of tissue and cells. LDH is cytoplasmic in its cellular location and in any one tissue is composed of one or two of five possible isoenzymes. While many of its clinical applications involve quantification of one or more specific serum isoenzymes, an estimate of total LDH is usually required. Lactate dehydrogenase catalyzes the reversible reaction: L-lactate + NAD <--> pyruvate + NADH. Testing methods either measure the increase in NADH produced in the lactate-to-pyruvate reaction or the decrease in NADH produced in the pyruvate-to-lactate reaction. PMID: 3882046. Reference ranges are highly method dependent. The pyruvate-to-lactate reaction is preferred theoretically because the equilibrium constant is large and the rate for any amount of enzyme is 2-3 times faster, thus smaller sample and shorter observation periods are needed. Disadvantages of the pyruvate-to-lactate reaction are loss of linearity as compared with the lactate-to-pyruvate reaction, and greater substrate inhibition of the enzyme. [Tietz Fourth Edition] Source: Regenstrief LOINC

LP7238-1   Body fld
The LOINC "Body fld" System represents body fluids other than serum, plasma, blood, urine, and cerebrospinal fluid. When a LOINC term with the System "Body fld" is used, the specific specimen source or body fluid type should be reported elsewhere with the result. Where more specific terms for pleural, peritoneal, synovial fluid, etc. exist, we encourage you to use the more specific terms. In contrast to "Body fld", the System "Asp" in LOINC represents the fluid withdrawn during an aspiration procedure from an abnormal collection of fluid, such as from an abscess or cyst. "Asp" is used for abnormal fluid collections that are aspirated, while "Body fld" is used for named body fluids, such as synovial fluid or peritoneal fluid, that are not inherently pathologic. Source: Regenstrief LOINC

Reference Information

Type Source Reference
Webcontent Lab Tests Online®Copyright Copyright © 2021 Lab Tests Online. All rights reserved. Lactate Dehydrogenase (LD)

Fully-Specified Name

Component
Lactate dehydrogenase
Property
CCnc
Time
Pt
System
Body fld
Scale
Qn
Method

Additional Names

Short Name
LDH Fld-cCnc
Display Name
LDH (Body fld) [Catalytic activity/Vol]
Consumer Name Alpha Get Info
Lactate Dehydrogenase (LDH), Body fluid

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0
Last Updated
Version 2.73
Order vs. Observation
Both
Common Test Rank Get Info
1101

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: LDH /SM
el-GR Greek (Greece) Γαλακτική αφυδρογονάση:Καταλυτική Συγκέντρωση:Χρονική στιγμή:Σωματικό υγρό:Ποσοτική:
Synonyms: LDH
es-AR Spanish (Argentina) lactato deshidrogenasa:concentración catalítica:punto en el tiempo:líquido corporal, no especificado:cuantitativo:
es-MX Spanish (Mexico) Lactato deshidrogenasa:Concentración catalítica:Punto temporal:Fluído corporal:Cuantitativo:
es-ES Spanish (Spain) Lactato deshidrogenasa:Concentración Catalítica:Punto temporal:Fluido corporal:Qn:
Synonyms: Cuantitativo
et-EE Estonian (Estonia) Laktaadi dehüdrogenaas:CCnc:Pt:Fx:Qn:
Synonyms: Juhuslik Kehavedelik Kvantitatiivne
fr-CA French (Canada) Lactate déshydrogénase:Concentration catalytique:Temps ponctuel:Liquide biologique:Quantitatif:
fr-BE French (Belgium) Lactate déshydrogénase:Concentration catalytique:Temps ponctuel:Liquide biologique:Quantitatif:
Synonyms: LDH
it-IT Italian (Italy) Lattato deidrogenasi:CCnC:Pt:Liquido corporeo:Qn:
Synonyms: Chimica Concentrazione Catalitica Liquido corporeo Punto nel tempo (episodio)
ko-KR Korean (Korea, Republic Of) 젖산 탈수소효소:촉매농도:검사시점:체액:정량:
nl-NL Dutch (Netherlands) lactaatdehydrogenase:enzymatische activiteit/volume:moment:lichaamsvocht:kwantitatief:
pl-PL Polish (Poland) Dehydrogenaza mleczanowa:stężenie katalityczne:punkt w czasie:płyn ustrojowy:ilościowy:
pt-BR Portuguese (Brazil) Desidrogenase Láctica:CCnc:Pt:LiqOrg:Qn:
Synonyms: ; LDH; L.D.H; Lactic acid dehydrogenase; LD; L-lactate dehydrogenase; Lact; 2-hydroxy-propionic acid; 2-hydroxy-propionate; Catalytic Concentration; Point in time; Random; BF; Fluid; Body fluid; FLU; Fl; Quantitative; QNT; Quant; Quan; Dehydrog; Dehyrdogenase; Chemistry
ru-RU Russian (Russian Federation) Лактатдегидрогеназа:КаталКонц:ТчкВрм:Тело ждк:Колич:
Synonyms: Каталитическая концентрация Количественный Тела жидкость Точка во времени;Момент
tr-TR Turkish (Turkey) Laktat dehidrojenaz:KtlKons:Zmlı:Vücut sv:Kant:
uk-UA Ukrainian (Ukraine) Лактатдегідрогеназа:Каталітична Концентрація:МоментЧасу:Рідини тіла:Кількісно:
Synonyms: 2-Hydroxypropanoic acid; 2-hydroxy-propionate; 2-hydroxy-propionic acid; B/F; BF; bod; Bodies; Body fluid; Body fluid, unsp; Catalytic Concentration; Chemistry; Dehydrog; Dehyrdogenase; Fl; Fld; FLU; Fluid; L.D.H; Lact; Lactic acid; Lactic acid dehydrogenase; LD; LDH; L-lactate; L-lactate dehydrogenase; Point in time; QNT; Quan; Quant; Quantitative; Random; Tumor marker
zh-CN Chinese (China) 乳酸脱氢酶:催化浓度:时间点:体液:定量型:
Synonyms: 2-羟基-丙酸;Lact;L-乳酸 L.D.H;LD;LDH;L-乳酸脱氢酶 催化浓度(单位体积);单位体积内酶的单位数 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 去氢酶 可用数量表示的;定量性;数值型;数量型;连续数值型标尺 时刻;随机;随意;瞬间 物体

Example Units

Unit Source
U/L Example UCUM Units
U/L eCHN
units/L REGENSTRIEF

LOINC Terminology Service (API) using HL7® FHIR® Get Info

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=2529-6