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

Reference Information

Type Source Reference
Webcontent Lab Tests Online®Copyright Copyright © 2021 Lab Tests Online. All rights reserved. Blood Urea Nitrogen (BUN)

Fully-Specified Name

Component
Urea nitrogen
Property
MCnc
Time
Pt
System
BldV
Scale
Qn
Method

Additional Names

Short Name
BUN BldV-mCnc
Display Name
Urea nitrogen (BldV) [Mass/Vol]
Consumer Name Alpha Get Info
Urea Nitrogen (BUN), Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 1.0j-a
Last Updated
Version 2.73
Order vs. Observation
Both
Common Test Rank Get Info
3720

Member of these Groups Get Info

LOINC Group Group Name
LG1314-6 Urea nitrogen|MCnc|Pt|ANYBldSerPl

Language Variants Get Info

Tag Language Translation
de-DE German (Germany) Harnstoff-Stickstoff:Massenkonzentration:Zeitpunkt:Blut venös:Quantitativ:
de-AT German (Austria) Synonyms: BUN ven.
el-GR Greek (Greece) Άζωτο ουρίας:Συγκέντρωση μάζας:Χρονική στιγμή:Φλεβικό αίμα:Ποσοτική:
es-MX Spanish (Mexico) Nitrógeno de urea:Concentración de masa:Punto temporal:Sangre venosa:Cuantitativo:
es-ES Spanish (Spain) Nitrógeno ureico:Concentración de masa:Punto temporal:Sangre venosa:Qn:
Synonyms: Cuantitativo
es-AR Spanish (Argentina) nitrógeno ureico:concentración de masa:punto en el tiempo:sangre venosa:cuantitativo:
fr-FR French (France) Azote uréique:Masse/Volume:Ponctuel:Sang veineux:Numérique:
fr-BE French (Belgium) Azote uréique:Concentration de masse:Temps ponctuel:Sang veineux:Quantitatif:
Synonyms: BUN
fr-CA French (Canada) Azote uréique:Concentration de masse:Temps ponctuel:Sang veineux:Quantitatif:
it-IT Italian (Italy) Azoto ureico:MCnc:Pt:Sangue ven:Qn:
Synonyms: Chimica Concentrazione di Massa Punto nel tempo (episodio) Sangue venoso
ko-KR Korean (Korea, Republic Of) 요소 질소:질량농도:검사시점:정맥혈:정량:
nl-NL Dutch (Netherlands) ureumstikstof:massa/volume:moment:veneus bloed:kwantitatief:
pl-PL Polish (Poland) Azot mocznika:stężenie masowe:punkt w czasie:krew żylna:ilościowy:
pt-BR Portuguese (Brazil) Uréia nitrogenada:MCnc:Pt:SgVen:Qn:
Synonyms: ; Urea Nit; UN; Blood urea nitrogen; N2; N; Mass concentration; Level; Point in time; Random; Blood - venous; Bld ven; Bld venous; Blood venus; Blood ven; Venous; Quantitative; QNT; Quant; Quan; Chemistry
ru-RU Russian (Russian Federation) Азот мочевины крови:МассКонц:ТчкВрм:КрВ:Колич:
Synonyms: Количественный Кровь Венозная Массовая концентрация Точка во времени;Момент
tr-TR Turkish (Turkey) Üre azotu:KütlKons:Zmlı:KanVen:Kant:
Synonyms: Nitrojen
zh-CN Chinese (China) 尿素氮:质量浓度:时间点:静脉全血: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 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 水平;浓度;质量浓度(单位体积) 静脉血

Example Units

Unit Source
mg/dL Example UCUM Units

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

CodeSystem lookup
https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=12962-7