LOINC
Version 2.67

78537-8Urea nitrogen [Moles/volume] in Peritoneal dialysis fluid --4 hour dwell specimenActive

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]

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

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

Language Variants Get Info

zh-CNChinese (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:
fr-FRFrench (FRANCE)
Urea nitrogen^4H dwell specimen:SCnc:Pt:Dial fld prt:Qn:
it-ITItalian (ITALY)
Azoto ureico^4H campione:SCnc:Pt:Liquido di dialisi peritoneale:Qn:
es-ESSpanish (SPAIN)
Nitrógeno ureico^Muestra 4 horas de retencion:Concentración de sustancia:Punto temporal:Dialisis líquido peritoneal:Qn:
tr-TRTurkish (TURKEY)
Üre azotu^4Sa beklemiş hasta örneği:SubKons:Zmlı:Diyal sv prt:Kant:

Example Units

Unit Source
mmol/L Example UCUM Units

LOINC FHIR® API Example - CodeSystem Request Get Info

https://fhir.loinc.org/CodeSystem/$lookup?system=http://loinc.org&code=78537-8