LOINCActiveObservation

LOINC Code 94549-3: Isoheptacarboxylporphyrin (24H Stl) [Mass/Time]

94549-3 is a LOINC code used to identify Isoheptacarboxylporphyrin (24H Stl) [Mass/Time] 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 Isoheptacarboxylporphyrin. 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 Isoheptacarboxylporphyrin. 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

  • Isoheptacarboxylporphyrin [Mass/time] in 24 hour Stool
  • Isoheptacarboxylporphyrin
  • 1 day; 24 hours; 24HR; Bowel movement; Chemistry; Faecal; Faeces; Fecal; Feces; Hematology; Heme; Isohepta-CP; Mass Rate; mRate; QNT; Quan; Quant; Quantitative; Stl; Stool = Fecal

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

Isoheptacarboxylporphyrin (24H Stl) [Mass/Time]Isoheptacarboxylporphyrin [Mass/time] in 24 hour StoolIsohepta-CP 24h Stl-mRateIsoheptacarboxylporphyrinCHEMIsoheptacarboxylporphyrin, StoolMRat

Frequently asked questions

Code details

Code94549-3
SystemLOINC
Display nameIsoheptacarboxylporphyrin (24H Stl) [Mass/Time]
DescriptionIsoheptacarboxylporphyrin
Short nameIsohepta-CP 24h Stl-mRate
ComponentIsoheptacarboxylporphyrin
PropertyMRat
Timing24H
System (specimen)Stool
ScaleQn
ClassCHEM
Example unitsug/24 H
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.68
Last changed2.68

Consumer names

Isoheptacarboxylporphyrin, Stool

Part names

IsoheptacarboxylporphyrinMRat24HStoolQnMass Rate24 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.