Version 2.77

Term Description

A Peritoneal Equilibration Test (PET) is used to assess transport properties of the peritoneal membrane in patients undergoing peritoneal dialysis. Patients arrive at the dialysis unit in the morning with their overnight dwell fluid still in the abdomen. The overnight fluid is drained, and after complete drainage, in the classic PET, 2000 ml of a 2.27% glucose solution is instilled and peritoneal dialysis is begun. Ten ml samples are drawn at time 0, 2, and 4 hours to measure creatinine, urea, and glucose. The PET assesses the rate of solute equilibration between peritoneal capillary blood and dialysate based on the ratio of the solute concentrations in dialysate and plasma (D/P). PET results are used to adjust various aspects of a patient's peritoneal dialysis regimen, including dwell time, number of exchanges, and dialysis volume and composition. PMID: 7474677
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^4H dwell specimen
Property
SCnc
Time
Pt
System
Dial fld prt
Scale
Qn
Method

Additional Names

Short Name
Urea nit 4H dwell spec DiafP-sCnc
Display Name
Urea nitrogen 4 hour dwell specimen (Perit dial fld) [Moles/Vol]
Consumer Name Alpha Get Info
Urea Nitrogen (BUN) 4 Hour Dwell specimen, Peritoneal dialysis fluid

Basic Attributes

Class
CHEM
Type
Laboratory
First Released
Version 2.54
Last Updated
Version 2.54
Order vs. Observation
Observation

Member of these Panels

LOINC Long Common Name
78747-3 Peritoneal equilibration test panel - Peritoneal dialysis fluid

Member of these Groups Get Info

LOINC Group Group Name
LG50476-7 Urea nitrogen^4H dwell specimen|Pt|Dial fld prt

Language Variants Get Info

Tag Language Translation
es-ES Spanish (Spain) Nitrógeno ureico^Muestra 4 horas de retencion:Concentración de sustancia:Punto temporal:Dialisis líquido peritoneal:Qn:
Synonyms: Cuantitativo
es-MX Spanish (Mexico) Nitrógeno ureico ^Muestra de permanencia 4H:Concentración de sustancias:Punto temporal:Líquido de diálisis peritoneal:Cuantitativo:
fr-FR French (France) Azote uréique dialysat de T04h:Moles/Volume:Ponctuel:Liquide de dialyse péritonéale:Numérique:
it-IT Italian (Italy) Azoto ureico^4H campione:SCnc:Pt:Liquido di dialisi peritoneale:Qn:
Synonyms: 4 ore campione Chimica Concentrazione di Sostanza Dialisato Liquido di dialisi peritoneale Punto nel tempo (episodio)
tr-TR Turkish (Turkey) Üre azotu^4Sa beklemiş hasta örneği:SubKons:Zmlı:Diyal sv prt:Kant:
Synonyms: Nitrojen
zh-CN Chinese (China) 尿素氮^4小时存放标本:物质的量浓度:时间点:腹膜透析液:定量型:
Synonyms: 4小时存放（搁置、停留、留存、暂留、驻留、停顿）标本（样本、样品、试样、采样）;4H 停留标本 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 克分子浓度;克分子浓度(单位体积);摩尔浓度;摩尔浓度(单位体积);物质的量浓度(单位体积) 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 受检物 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 样品 样本 渗析液;透析物 试样

Example Units

Unit Source
mmol/L 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=78537-8