13756-2

Histamine/Creatinine [Mass Ratio] in 24 hour Urine

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Part Descriptions

LP15636-1   Histamine
Histamine is an organic nitrogen compound involved in local immune responses as well as regulating physiological function in the gut and acting as a neurotransmitter. Histamine triggers the inflammatory response. As part of an immune response to foreign pathogens, histamine is produced by basophils and by mast cells found in nearby connective tissues. Histamine increases the permeability of the capillaries to white blood cells and some proteins, to allow them to engage pathogens in the infected tissues. 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, Histamine (Wikipedia)

LP15636-1   Histamine
Histamine is derived from the decarboxylation of histidine. Histamine is then either stored or rapidly inactivated by acetaldehyde dehydrogenase. Deficiency of acetaldehyde dehydrogenase triggers an allergic reaction as the histamine then builds up. Most histamine is stored in mast cells or basophils in the body. IgE is bound to the surface of these cells and interacts with allergens to degranulate and release histamine when exposed to the appropriate antigen. 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

Histamine/Creatinine

Property

MRto

Time

24H

System

Urine

Scale

Qn

Method

Additional Names

Short Name

Histamine/Creat 24h Ur

Display Name

Histamine/Creatinine (24H U) [Mass ratio]

Consumer Name Alpha Get Info

Histamine/Creatinine, Urine

Basic Attributes

Class

CHEM

Type

Laboratory

First Released

Version 1.0k

Last Updated

Version 2.73

Order vs. Observation

Both

Common Test Rank Get Info

13086

Member of these Groups Get Info

Language Variants Get Info

Related Names

• 1 day
• 24 hours
• 24HR
• Chemistry
• CR
• Crea
• Creat
• Mass concentration ratio
• Mass ratio
• MCRto
• QNT
• Quan
• Quant
• Quantitative
• UA
• UCr
• UR
• Urn

Example Units

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CodeSystem lookup

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LOINC Copyright

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.