13711-7

Aspartate/Creatinine [Mass Ratio] in Urine

Active

Part Descriptions

LP15425-9   Aspartate
Aspartic acid (Asp), also known as aspartate, the name of its anion, is one of the 20 natural proteinogenic amino acids which are the building blocks of proteins. As with each of the 20 natural amino acids, there are two abbreviations commonly used to designate aspartic acid: Asp (three letter) and D (one letter). The abbreviations signifying a choice of either aspartic acid or asparagine are Asx (three-letter) and B (one letter). As its name indicates, aspartic acid is the carboxylic acid analog of asparagine. It is non-essential in mammals, and might serve as an excitatory neurotransmitter in the brain. It is also a metabolite in the urea cycle, and participates in gluconeogenesis. As a neurotransmitter, aspartic acid may provide resistance to fatigue and thus lead to endurance, although the evidence to support this idea is not strong. Copyright Text is available under the Creative Commons Attribution/Share-Alike License. See http://creativecommons.org/licenses/by-sa/3.0/ for details. Source: Wikipedia, Aspartate (Wikipedia)

LP15425-9   Aspartate
Aspartic acid is a dicarboxylic amino acid with acidic R groups which is a cosubstrate with glutamic acid for aspartate aminotransferase (AST). Aspartic acid is used in pyrimidine biosynthesis and is a metabolite in the urea cycle and participates in gluconeogenesis. Increased in dicarboxylic aminoaciduria. (Information from ARUP Laboratories 9/14/06) Source: Regenstrief Institute

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

Aspartate/Creatinine

Property

MRto

Time

Pt

System

Urine

Scale

Qn

Method

Additional Names

Short Name

Aspartate/Creat Ur

Display Name

Aspartate/Creatinine (U) [Mass ratio]

Consumer Name Alpha Get Info

Aspartate/Creatinine, Urine

Basic Attributes

Class

CHEM

Type

Laboratory

First Released

Version 1.0k

Last Updated

Version 2.73

Order vs. Observation

Observation

Common Test Rank Get Info

19334

Member of these Groups Get Info

Language Variants Get Info

Related Names

• Asp
• Aspartic acid
• Chemistry
• CR
• Crea
• Creat
• Mass concentration ratio
• Mass ratio
• MCRto
• Point in time
• QNT
• Quan
• Quant
• Quantitative
• Random
• UA
• UCr
• UR
• Urn

Example Units

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Copyright © 2024 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2024, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee. See https://loinc.org/license for the full LOINC copyright and license.