32179-4

Heptacarboxylporphyrin/Creatinine [Molar ratio] in 24 hour Urine

Active

Part Descriptions

LP14489-6   Heptacarboxylporphyrin
Part of porphyrin fractionation testing useful in diagnosing porphyrin cutanea tarda, hereditary coproporphyria, and variegate porphyria. Such patients typically will present with profound elevations of porphyrin analytes (e.g. > 5-fold) during acute episodes. Moderate elevations (e.g. < 3-fold) are more often due to medications or environmental factors. Source: Regenstrief LOINC

LP14489-6   Heptacarboxylporphyrin
Porphyrins are created as byproducts of porphyrinogens. Hereditary enzyme disorders leading to the buildup of porphyrins or porphyrinogens cause porphyrias and affect the heme biosynthetic pathway. Most of these disorders are inherited as autosomal dominant disorders. Increased urine porphyrins are seen with congenital erythropoietic porphyria, acute intermittent porphyria, hereditary coproporphyria, variegate porphyria, and porphyria cutanea tarda. Information from LOINC partner 1 and Jacobs and DeMott Laboratory Test Handbook, 5th edition, DS Jacobs, WR DeMott and DK Oxley, 2001. 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

Heptacarboxylporphyrin/Creatinine

Property

SRto

Time

24H

System

Urine

Scale

Qn

Method

Additional Names

Long Common Name

Heptacarboxylporphyrin/Creatinine [Molar ratio] in 24 hour Urine

Short Name

Hepta-CP/Creat 24h Ur-sRto

Display Name

Heptacarboxylporphyrin/Creatinine (24H U) [Molar ratio]

Consumer Name Alpha Get Info

Heptacarboxylporphyrin/Creatinine, Urine

Basic Attributes

Class

CHEM

Type

Laboratory

First Released

Version 2.07

Last Updated

Version 2.42

Order vs. Observation

Observation

Member of these Panels

Member of these Groups Get Info

Language Variants Get Info

Related Names

• 1 day
• 24 hours
• 24HR
• Chemistry
• CR
• Crea
• Creat
• Hepacarboxyporph
• Heptacarbox
• Heptacarboxyl porphyrin
• Heptacarboxylate porphyrin
• Heptacarboxylporphyrins
• Heptacarboxyporph
• Heptacarboxyporphyrin
• Hepta-CP
• Heptaporphyrin
• Hexacarboxyl porphyrin
• QNT
• Quan
• Quant
• Quantitative
• Scrto
• Substance concentration ratio
• Substance ratio
• 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 © 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.