44416-6
Urea nitrogen/Creatinine [Mass Ratio] in Urine
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Part Descriptions
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
LP32035-5 Creatinine
Creatinine or creatine anhydride, is a breakdown product of creatine phosphate in muscle. The loss of water molecule from creatine results in the formation of creatinine. It is transferred to the kidneys by blood plasma, whereupon it is eliminated by glomular filtration and partial tubular excretion. Creatinine is usually produced at a fairly constant rate and measuring its serum level is a simple test. A rise in blood creatinine levels is observed only with marked damage to functioning nephrons; therefore this test is not suitable for detecting early kidney disease. Creatine and creatinine are metabolized in the kidneys, muscle, liver and pancreas.
Copyright Copyright ©2005-2009 Genome Alberta (Reference to original publication: Wishart DS, Knox C, Guo AC, et al. HMDB: a knowledgebase for the human metabolome. Nucleic Acids Res. 2009 37(Database issue):D603-610.)
Source: Human Metabolome Database, Creatinine
Fully-Specified Name
- Component
- Urea nitrogen/Creatinine
- Property
- MRto
- Time
- Pt
- System
- Urine
- Scale
- Qn
- Method
Additional Names
- Short Name
- UUN/Creat Ur
- Display Name
- Urea nitrogen/Creatinine (U) [Mass ratio]
- Consumer Name Alpha Get Info
- Urea Nitrogen (BUN)/Creatinine, Urine
Basic Attributes
- Class
- CHEM
- Type
- Laboratory
- First Released
- Version 2.17
- Last Updated
- Version 2.42
- Order vs. Observation
- Both
Member of these Groups Get Info
| LOINC Group | Group Name |
|---|---|
| LG34808-2 | Urea nitrogen/Creatinine| |
Language Variants Get Info
| Tag | Language | Translation |
|---|---|---|
| es-ES | Spanish (Spain) | Nitrógeno ureico/Creatinina: Synonyms: Cuantitativo |
| es-MX | Spanish (Mexico) | Nitrógeno ureico / Creatinina: |
| fr-CA | French (Canada) | Azote uréique/Créatinine: |
| fr-FR | French (France) | Azote uréique/créatinine: |
| fr-BE | French (Belgium) | Azote uréique/Créatinine: Synonyms: BUN Rapport de masse |
| it-IT | Italian (Italy) | Azoto ureico/Creatinina: Synonyms: Chimica Punto nel tempo (episodio) Rapporto di Massa |
| nl-NL | Dutch (Netherlands) | ureumstikstof/creatinine: Synonyms: kreatinine |
| pl-PL | Polish (Poland) | Azot mocznika/kreatynina: |
| pt-BR | Portuguese (Brazil) | Uréia nitrogenada/Creatinina: Synonyms: ; |
| ru-RU | Russian (Russian Federation) | Азот мочевины крови/Креатинин: Synonyms: Количественный Масс отношение Точка во времени; |
| tr-TR | Turkish (Turkey) | Üre azotu/Kreatinin: Synonyms: Nitrojen |
| zh-CN | Chinese (China) | 尿素氮/肌酐: Synonyms: BUN; |
Example Units
| Unit | Source |
|---|---|
| g/g{creat} | Example UCUM Units |
LOINC Terminology Service (API) using HL7® FHIR® Get Info
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- CodeSystem lookup
- https:
//fhir.loinc.org/CodeSystem/$lookup?system=http: //loinc.org&code=44416-6
LOINC Copyright
Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright