74445-8
LOINC Code
| LOINC code | 74445-8 | ||||||||||||||||
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| name | |||||||||||||||||
| description | Determination 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. | ||||||||||||||||
| status | ACTIVE | ||||||||||||||||
Fully-Specified Name | |||||||||||||||||
| component | Porphyrin fractions panel | ||||||||||||||||
| property | SCnt = Substance Content | ||||||||||||||||
| time | Pt = Point in time: To identify measures at a point in time. This is a synonym for “spot” or “random” as applied to urine measurements. | ||||||||||||||||
| system | Stool = Stool = Fecal | ||||||||||||||||
| scale | - | ||||||||||||||||
| method | |||||||||||||||||
Additional Names | |||||||||||||||||
| short name | Bowel movement; Chemistry; Faecal; Faeces; Fecal; Feces; Frac; Fract; Fraction; Fractionated; Fractionation; Pan; PANEL.CHEMISTRY; Panl; Pnl; Point in time; Porphyrin Fract Pnl; Random; Stl; Stool = Fecal; Substance Content | ||||||||||||||||
Basic Attributes | |||||||||||||||||
| class | PANEL.CHEM | ||||||||||||||||
| type | 1 Laboratory | ||||||||||||||||
| order vs. observation | Porphyrin Fract | ||||||||||||||||
Panel Components | |||||||||||||||||
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History/Usage | |||||||||||||||||
| first released | |||||||||||||||||
| last updated | 2.48 | ||||||||||||||||
| last change type | MIN - change to field other than name | ||||||||||||||||
Related Names | |||||||||||||||||
Copyright © 2026 Regenstrief Institute, Inc. All Rights Reserved. To the extent included herein, the LOINC table and LOINC codes are copyright © 1995-2026, 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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