Version 2.78

Term Description

Blood urea nitrogen (BUN) and creatinine tests may be ordered to evaluate kidney function prior to some procedures (i.e. CT scan) which require the use of contrast agents that may damage the kidneys.
Source: Regenstrief LOINC

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^pre contrast
Property
MCnc
Time
Pt
System
Ser/Plas
Scale
Qn
Method

Additional Names

Long Common Name
Urea nitrogen [Mass/volume] in Serum or Plasma --pre contrast
Short Name
BUN pre contrast SerPl-mCnc
Display Name
Urea nitrogen pre contrast [Mass/Vol]
Consumer Name Alpha Get Info
Urea Nitrogen (BUN) before Contrast, Blood

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.42
Last Updated
Version 2.42
Order vs. Observation
Both

Language Variants Get Info

Tag Language Translation
es-ES Spanish (Spain) Nitrógeno ureico^pre contraste:Concentración de masa:Punto temporal:Suero o Plasma:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Nitrógeno ureico ^ pre contraste:Concentración de masa:Punto temporal:Suero o Plasma:Cuantitativo:
fr-FR French (France) Azote uréique avant contraste:Masse/Volume:Ponctuel:Sérum/Plasma:Numérique:
it-IT Italian (Italy) Azoto ureico^pre contrasto:MCnc:Pt:Siero/Plasma:Qn:
Synonyms: Chimica Concentrazione di Massa Plasma prima di contrasto Punto nel tempo (episodio) Siero Siero o Plasma
nl-NL Dutch (Netherlands) ureumstikstof^voor contrast:massa/volume:moment:serum of plasma:kwantitatief:
pt-BR Portuguese (Brazil) Uréia nitrogenada^pré contraste::Pt:Soro/Plas:Qn:
ru-RU Russian (Russian Federation) Азот мочевины крови^до контраста:МассКонц:ТчкВрм:Сыв/Плаз:Колич:
Synonyms: Количественный Массовая концентрация Плазма Сыворотка Сыворотка или Плазма Точка во времени;Момент
tr-TR Turkish (Turkey) Üre azotu^kontrast öncesi:KütlKons:Zmlı:Ser/Plaz:Kant:
Synonyms: Nitrojen
zh-CN Chinese (China) 尿素氮^在对比剂之前:质量浓度:时间点:血清/血浆:定量型:
Synonyms: BUN 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 XXX刺激 - 在...之前 之前于对比剂;之前于对比;在对比之前 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 增强剂 对比增强剂 时刻;随机;随意;瞬间 水平;浓度;质量浓度(单位体积) 血清/血浆脲氮 血清或血浆

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=72270-2