Version 2.73

44734-2Urea nitrogen/Creatinine [Mass Ratio] in BloodActive

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

Fully-Specified Name

Urea nitrogen/Creatinine

Additional Names

Short Name
BUN/Creat Bld
Display Name
Urea nitrogen/Creatinine (Bld) [Mass ratio]
Consumer Name Alpha
Urea Nitrogen (BUN)/Creatinine, Blood

Basic Attributes

First Released
Version 2.17
Last Updated
Version 2.73
Order vs. Observation
Common US Lab Results Rank

Member of these Panels

LOINC Long Common Name
51990-0 Basic metabolic panel - Blood
54037-7 HEDIS 2009 panel
57820-3 HEDIS 2010 panel
60442-1 HEDIS 2011 panel
67767-4 HEDIS 2012 panel
72199-3 HEDIS 2013 panel
74234-6 HEDIS 2014 Value Sets

Member of these Groups

LG12083-8 Urea nitrogen/Creatinine|MRto|Pt|ANYBldSerPl

Language Variants Get Info

zh-CNChinese (China)
nl-NLDutch (Netherlands)
fr-BEFrench (Belgium)
Azote uréique/Créatinine:Ratio de masse:Temps ponctuel:Sang:Quantitatif:
fr-CAFrench (Canada)
Azote uréique/Créatinine:Ratio de masse:Temps ponctuel:Sang:Quantitatif:
fr-FRFrench (France)
Azote uréique/créatinine:Masse ratio:Ponctuel:Sang:Numérique:
it-ITItalian (Italy)
Azoto ureico/Creatinina:MRto:Pt:Sangue:Qn:
pl-PLPolish (Poland)
Azot mocznika/Kreatynina:Współczynnik masy:Punkt w czasie:Krew:ilościowy:
pt-BRPortuguese (Brazil)
Uréia nitrogenada/Creatinina:MCrto:Pt:SgTotal:Qn:
ru-RURussian (Russian Federation)
Азот мочевины крови/Креатинин:МассОтн:ТчкВрм:Кр:Колич:
es-MXSpanish (Mexico)
Nitrógeno ureico / Creatinina:Relación de masa:Punto temporal:Sangre:Cuantitativo:
es-ESSpanish (Spain)
Nitrógeno ureico/Creatinina:Relacion de Masa:Punto temporal:Sangre:Qn:
tr-TRTurkish (Turkey)
Üre azotu/Kreatinin:KütlOr:Zmlı:Kan:Kant:

Example Units

Unit Source
g/g{creat} Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info