Version 2.78

Part Description

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

Fully-Specified Name

Component
Urea nitrogen
Property
SRat
Time
24H
System
Urine
Scale
Qn
Method

Additional Names

Short Name
UUN 24h Ur-sRate
Display Name
Urea nitrogen (24H U) [Moles/Time]
Consumer Name Alpha Get Info
Urea Nitrogen (BUN), Urine

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0k
Last Updated
Version 2.73
Order vs. Observation
Both
Common Test Rank Get Info
16289

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) Harnstoff-Stickstoff:Stoffmengenrate:24 Stunden:Urin:Quantitativ:
es-MX Spanish (Mexico) Nitrógeno de urea:Tasa de sustancia:24H:Orina:Cuantitativo:
es-AR Spanish (Argentina) nitrógeno ureico:índice de sustancia:24 horas:orina:cuantitativo:
es-ES Spanish (Spain) Nitrógeno ureico:Indice de susbtancia:24 horas:Orina:Qn:
Synonyms: Cuantitativo
fr-CA French (Canada) Azote uréique:Débit de substance:24 h:Urine:Quantitatif:
fr-FR French (France) Azote uréique:Moles/Temps:24H:Urine:Numérique:
fr-BE French (Belgium) Azote uréique:Débit de substance:24 h:Urine:Quantitatif:
Synonyms: BUN
it-IT Italian (Italy) Azoto ureico:SRat:24h:Urine:Qn:
Synonyms: 24 Ore Chimica Tasso di sostanza
ko-KR Korean (Korea, Republic Of) 요소 질소:물질비:24시간:뇨:정량:
nl-NL Dutch (Netherlands) ureumstikstof:mol/tijd:24 uur:urine:kwantitatief:
Synonyms: 24U
pl-PL Polish (Poland) Azot mocznika:wskaźnik molowy w jednostce czasu:24 godziny:mocz:ilościowy:
pt-BR Portuguese (Brazil) Uréia nitrogenada:SRat:24H:Urina:Qn:
Synonyms: ; Urea Nit; UN; Blood urea nitrogen; N2; N; sRate; Substance rate; 1 day; 24 hours; 24HR; UR; Urn; UA; Quantitative; QNT; Quant; Quan; Chemistry; UUN
ru-RU Russian (Russian Federation) Азот мочевины крови:МольРасх:24 часа:Моча:Колич:
Synonyms: Количественный Молярная скорость;Молярный расход
tr-TR Turkish (Turkey) Üre azotu:SubHz:24Sa:İdrar:Kant:
Synonyms: Nitrojen
zh-CN Chinese (China) 尿素氮:物质的量速率:24小时:尿液:定量型:
Synonyms: 1天;1日;24.0小时;一天;一日;二十四个小时;二十四小时 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 N;N2;Nit;氮气 UUN 克分子速率;克分子速率(单位时间);摩尔速率;摩尔速率(单位时间);物质的量速率(单位时间) 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 尿;小便;下泉 尿尿素氮 尿液尿素氮（Urine Urea nitrogen，UUN） 尿液脲氮 尿脲氮

Example Units

Unit Source
mmol/(24.h) Example UCUM Units
mmol/24hr eCHN

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=14939-3