Porphyrin fractions panel - Stool   74835-0

LOINC Code


LOINC code74835-0
namePorphyrin fractions panel - Stool
descriptionDetermination of porphyrin profile in stool is performed to evaluate porphyria. Total fecal porphyrins are markedly increased especially in active HCP (Hereditary Coproporphyria) and VP (Variegate Porphyria) and to a lesser extent in PCT (Porphyria Cutanea Tarda) and EPP (Erythropoietic Protoporphyria). Porphyrins with 2-4 carboxyl groups generally predominate in feces. As with urine, it is most useful to measure the total amount of porphyrins in a fecal sample. If increased, then the laboratory may determine which porphyrins predominate to identify the presence and nature of the porphyrin defect. A summary of the different porphyria disorders, the genes where mutations occur and the associated symptoms is given in: http://www.porphyria-europe.com/02-for-healthcare/the-porphyrias.asp.
statusACTIVE

Fully-Specified Name

componentPorphyrin fractions panel
propertySFr  =  Substance Fraction
timePt  =  Point in time:  To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements.
systemStool  =  Stool = Fecal
scale-
method

Additional Names

short namePorphyrin Fract Pnl SFr Stl

Basic Attributes

classPANEL.CHEM
type1  Laboratory
order vs. observationOrder

Panel Components

75024-0Coproporphyrin 1/Porphyrins.total in Stool
75025-7Coproporphyrin 3/Porphyrins.total in Stool
75026-5Deuteroporphyrin/Porphyrins.total in Stool
75027-3Mesoporphyrin/Porphyrins.total in Stool
75028-1Protoporphyrin/Porphyrins.total in Stool
49290-0Porphyrins [Interpretation] in Stool Narrative

Associated Observations

LOINC codes that represent optional associated observation(s) for a clinical observation or laboratory test. A LOINC term may represent a single associated observation or panel containing several associated observations.

History/Usage

first released
last updated2.48
last change typeMIN  - change to field other than name

Related Names

Bowel movement
Chemistry
Faecal
Faeces
Fecal
Feces
Frac
Fract
Fraction
Fractionated
Fractionation
Pan
PANEL.CHEMISTRY
Panl
Percent
Pnl
Point in time
Porphyrin Fract Pnl
Random
Stl
Stool = Fecal
Substance Fraction

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.

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