What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveObservation

LOINC Code 9735-2: Uroporphyrin/Total porphyrins (24H Stl) [Mass fraction]

Name: LOINC Code 9735-2: Uroporphyrin/Total porphyrins (24H Stl) [Mass fraction]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T09:00:29.657Z

9735-2 is a LOINC code used to identify Uroporphyrin/Total porphyrins (24H Stl) [Mass fraction] in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Uroporphyrin/Porphyrins.total. It is commonly used with the system or sample type Stool.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Uroporphyrin/Porphyrins.total. It is commonly used with the system or sample type Stool.

When is it used?

Used in lab systems, EHRs, and clinical data exchange.
May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
Status: ACTIVE
Order vs observation: Observation

What it does not mean

The code identifies the observation or test, not the actual result.

Key facts

Uroporphyrin/Porphyrins.total in 24 hour Stool
Uroporphyrin/Porphyrins.total
1 day; 24 hours; 24HR; Bowel movement; Chemistry; Faecal; Faeces; Fecal; Feces; Hematology; Heme; Mass Fraction; Octacarboxyl porphyrin; Octacarboxylporphyrin; Octacarboxyphyrin; Percent; Porph; Porphyrin; QNT; Quan; Quant; Quantitative; Stl; Stool = Fecal; Tot; Totl; Urophorph

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Uroporphyrin/Total porphyrins (24H Stl) [Mass fraction]Uroporphyrin/Porphyrins.total in 24 hour StoolUropor 24h MFr StlUroporphyrin/Porphyrins.totalCHEMUroporphyrin/Total Porphyrins, StoolMFr

Frequently asked questions

Code details

Code9735-2

SystemLOINC

Display nameUroporphyrin/Total porphyrins (24H Stl) [Mass fraction]

DescriptionUroporphyrin/Porphyrins.total

Short nameUropor 24h MFr Stl

ComponentUroporphyrin/Porphyrins.total

PropertyMFr

Timing24H

System (specimen)Stool

ScaleQn

ClassCHEM

Example units%

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0i

Last changed2.70

Consumer names

Uroporphyrin/Total Porphyrins, Stool

Part names

Uroporphyrin/Porphyrins.totalMFr24HStoolQnMass fraction24 hours

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.