Version 2.77

Part Descriptions

LP14492-0   Urea nitrogen
Urea nitrogen is the waste product formed in the liver when proteins are broken down into their respective amino acids. Once proteins are metabolized in the liver, urea nitrogen is released from the liver to the kidneys via the bloodstream. The kidneys then filter the urea nitrogen out of the bloodstream into the urine. Although the kidneys filter out most of the urea nitrogen in the blood, small traces of stable urea nitrogen remain in circulation. To evaluate kidney function, a blood urea nitrogen test (BUN test) is conducted. High amounts of urea nitrogen in the BUN test indicate complications with kidney function or decreased blood flow to the kidneys. A decrease in urea nitrogen in the BUN test is indicative of severe liver disease or malnutrition. [Lab Tests Online:bun/tab/sample/] Source: Regenstrief LOINC

LP32035-5   Creatinine
Creatinine or creatine anhydride, is a breakdown product of creatine phosphate in muscle. The loss of water molecule from creatine results in the formation of creatinine. It is transferred to the kidneys by blood plasma, whereupon it is eliminated by glomular filtration and partial tubular excretion. Creatinine is usually produced at a fairly constant rate and measuring its serum level is a simple test. A rise in blood creatinine levels is observed only with marked damage to functioning nephrons; therefore this test is not suitable for detecting early kidney disease. Creatine and creatinine are metabolized in the kidneys, muscle, liver and pancreas. Copyright Copyright ©2005-2009 Genome Alberta (Reference to original publication: Wishart DS, Knox C, Guo AC, et al. HMDB: a knowledgebase for the human metabolome. Nucleic Acids Res. 2009 37(Database issue):D603-610.) Source: Human Metabolome Database, Creatinine

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 In contrast to "Body fld", the System "Asp" in LOINC represents the fluid withdrawn during an aspiration procedure from an abnormal collection of fluid, such as from an abscess or cyst.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

Fully-Specified Name

Urea nitrogen/Creatinine
Body fld

Additional Names

Short Name
Urea nit/Creat Fld
Display Name
Urea nitrogen/Creatinine (Body fld) [Mass ratio]
Consumer Name Alpha Get Info
Urea Nitrogen (BUN)/Creatinine, Body fluid

Basic Attributes

First Released
Version 2.17
Last Updated
Version 2.42
Order vs. Observation

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) Harnstoff-Stickstoff/Creatinin:Massenverhältnis:Zeitpunkt:Körperflüssigkeit:Quantitativ:
es-ES Spanish (Spain) Nitrógeno ureico/Creatinina:Relacion de Masa:Punto temporal:Fluido corporal:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Nitrógeno ureico / Creatinina:Relación de masa:Punto temporal:Fluído corporal:Cuantitativo:
fr-CA French (Canada) Azote uréique/Créatinine:Ratio de masse:Temps ponctuel:Liquide biologique:Quantitatif:
fr-FR French (France) Azote uréique/créatinine:Masse ratio:Ponctuel:Liquide biologique:Numérique:
fr-BE French (Belgium) Azote uréique/Créatinine:Ratio de masse:Temps ponctuel:Liquide biologique:Quantitatif:
Synonyms: BUN Rapport de masse
it-IT Italian (Italy) Azoto ureico/Creatinina:MRto:Pt:Liquido corporeo:Qn:
Synonyms: Chimica Liquido corporeo Punto nel tempo (episodio) Rapporto di Massa
nl-NL Dutch (Netherlands) ureumstikstof/creatinine:massaverhouding:moment:lichaamsvocht:kwantitatief:
Synonyms: kreatinine
pl-PL Polish (Poland) Azot mocznika/kreatynina:współczynnik masowy:punkt w czasie:płyn ustrojowy:ilościowy:
pt-BR Portuguese (Brazil) Uréia nitrogenada/Creatinina:MCrto:Pt:LiqOrg:Qn:
Synonyms: ; Urea Nit; UN; Blood urea nitrogen; N2; N; Creat; CR; mRto; Mass concentration ratio; Point in time; Random; BF; Fluid; Body fluid; FLU; Fl; Quantitative; QNT; Quant; Quan; Chemistry
ru-RU Russian (Russian Federation) Азот мочевины крови/Креатинин:МассОтн:ТчкВрм:Тело ждк:Колич:
Synonyms: Количественный Масс отношение Тела жидкость Точка во времени;Момент
tr-TR Turkish (Turkey) Üre azotu/Kreatinin:KütlOr:Zmlı:Vücut sv:Kant:
Synonyms: Nitrojen
zh-CN Chinese (China) 尿素氮/肌酐:质量比率:时间点:体液:定量型:
Synonyms: BUN;UN;血尿素氮;血尿素氮(Blood urea nitrogen,BUN,尿素氮);血液尿素氮 CO(NH2)2;碳酰二胺;脲 CR;Creat;肌氨酸酐;肌酸内酰胺;肌酸酐 N;N2;Nit;氮气 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 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 来自于同一体系的两种分析物的质量之比;质量比 物体 肌酸内酰胺

Example Units

Unit Source
g/g{creat} Example UCUM Units

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

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