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
68387-0 Lactate dehydrogenase [Enzymatic activity/volume] in Peritoneal fluid by Lactate to pyruvate reaction
60020-5 Lactate dehydrogenase [Enzymatic activity/volume] in Peritoneal 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

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
Periton fld
Scale
Qn
Method

Additional Names

Short Name
LDH Prt-cCnc
Display Name
LDH (Periton fld) [Catalytic activity/Vol]
Consumer Name Alpha Get Info
Lactate Dehydrogenase (LDH), Peritoneal 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
5790

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: LDH /ASZ
el-GR Greek (Greece) Γαλακτική αφυδρογονάση:Καταλυτική Συγκέντρωση:Χρονική στιγμή:Περιτοναϊκό υγρό:Ποσοτική:
Synonyms: LDH
es-AR Spanish (Argentina) lactato deshidrogenasa:concentración catalítica:punto en el tiempo:líquido peritoneal:cuantitativo:
es-ES Spanish (Spain) Lactato deshidrogenasa:Concentración Catalítica:Punto temporal:Fluído peritoneal:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Lactato deshidrogenasa:Concentración catalítica:Punto temporal:Líquido peritoneal:Cuantitativo:
et-EE Estonian (Estonia) Laktaadi dehüdrogenaas:CCnc:Pt:PrtF:Qn:
Synonyms: Juhuslik Kõhuõõnevedelik Kvantitatiivne
fr-CA French (Canada) Lactate déshydrogénase:Concentration catalytique:Temps ponctuel:Liquide péritonéal:Quantitatif:
fr-BE French (Belgium) Lactate déshydrogénase:Concentration catalytique:Temps ponctuel:Liquide péritonéal:Quantitatif:
Synonyms: LDH
it-IT Italian (Italy) Lattato deidrogenasi:CCnC:Pt:Liquido peritoneale:Qn:
Synonyms: Chimica Concentrazione Catalitica Liquido peritoneale Punto nel tempo (episodio)
ko-KR Korean (Korea, Republic Of) 젖산 탈수소효소:촉매농도:검사시점:복막액:정량:
nl-NL Dutch (Netherlands) lactaatdehydrogenase:enzymatische activiteit/volume:moment:peritoneaalvocht:kwantitatief:
pl-PL Polish (Poland) Dehydrogenaza mleczanowa:stężenie katalityczne:punkt w czasie:płyn otrzewnowy:ilościowy:
pt-BR Portuguese (Brazil) Desidrogenase Láctica:CCnc:Pt:LiqPerit/Ascit: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; Prt; Ascites; Ascitic fluid; Ascitis; Peritoneal fluid; Quantitative; QNT; Quant; Quan; Dehydrog; Dehyrdogenase; Chemistry
ru-RU Russian (Russian Federation) Лактатдегидрогеназа:КаталКонц:ТчкВрм:Перитон ждк:Колич:
Synonyms: Каталитическая концентрация Количественный Перитонеальная жидкость Точка во времени;Момент
tr-TR Turkish (Turkey) Laktat dehidrojenaz:KtlKons:Zmlı:Periton sv:Kant:
zh-CN Chinese (China) 乳酸脱氢酶:催化浓度:时间点:腹膜液: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 腹腔积液;水臌;腹水;腹膜腔积水;腹膜腔积液

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=2531-2