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
MCnc
Time
24H
System
Urine
Scale
Qn
Method

Additional Names

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

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
3630

Member of these Panels

LOINC Long Common Name
70300-9 ESRD dialysis adequacy panel

Member of these Groups Get Info

LOINC Group Group Name
LG49761-6 Urea nitrogen|24H|Urine
LG34710-0 Urea nitrogen|MCnc|Urine

Language Variants Get Info

Tag Language Translation
de-AT German (Austria) Synonyms: Harnstoff-N/24h U
el-GR Greek (Greece) Άζωτο ουρίας:Συγκέντρωση μάζας:24 ώρες:Ούρα:Ποσοτική:
es-MX Spanish (Mexico) Nitrógeno de urea:Concentración de masa:24H:Orina:Cuantitativo:
es-AR Spanish (Argentina) nitrógeno ureico:concentración de masa:24 horas:orina:cuantitativo:
es-ES Spanish (Spain) Nitrógeno ureico:Concentración de masa:24 horas:Orina:Qn:
Synonyms: Cuantitativo
fr-CA French (Canada) Azote uréique:Concentration de masse:24 h:Urine:Quantitatif:
fr-BE French (Belgium) Azote uréique:Concentration de masse:24 h:Urine:Quantitatif:
Synonyms: BUN
fr-FR French (France) Azote uréique:Masse/Volume:24H:Urine:Numérique:
it-IT Italian (Italy) Azoto ureico:MCnc:24h:Urine:Qn:
Synonyms: 24 Ore Chimica Concentrazione di Massa
ko-KR Korean (Korea, Republic Of) 요소 질소:질량농도:24시간:뇨:정량:
nl-NL Dutch (Netherlands) ureumstikstof:massa/volume:24 uur:urine:kwantitatief:
Synonyms: 24U
pl-PL Polish (Poland) Azot mocznika:stężenie masowe:24 godziny:mocz:ilościowy:
pt-BR Portuguese (Brazil) Uréia nitrogenada:MCnc:24H:Urina:Qn:
Synonyms: ; Urea Nit; UN; Blood urea nitrogen; N2; N; Mass concentration; Level; 1 day; 24 hours; 24HR; UR; Urn; UA; Quantitative; QNT; Quant; Quan; Chemistry; UUN
ru-RU Russian (Russian Federation) Азот мочевины крови:МассКонц:24 часа:Моча:Колич:
Synonyms: Количественный Массовая концентрация
tr-TR Turkish (Turkey) Üre azotu:KütlKons:24Sa:İdrar:Kant:
Synonyms: Nitrojen
uk-UA Ukrainian (Ukraine) Азот сечовини:Масова Концентрація:24год:Сеча:Кількісно:
Synonyms: 1 day; 24 hours; 24HR; Blood urea nitrogen; Chemistry; Kidney; Level; Mass concentration; N; N2; Nephrology; Nit; QNT; Quan; Quant; Quantitative; Renal; UA; UN; UR; Urn; UUN
zh-CN Chinese (China) 尿素氮:质量浓度: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 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 水平;浓度;质量浓度(单位体积)

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=12967-6