LOINCActiveObservation

LOINC Code 49290-0: Porphyrins Nar (Stl) [Interp]

49290-0 is a LOINC code used to identify Porphyrins Nar (Stl) [Interp] 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 Porphyrins. It is commonly used with the system or sample type Stool.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Porphyrins. 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

  • Porphyrins [Interpretation] in Stool Narrative
  • Porphyrins
  • Bowel movement; Chemistry; Faecal; Faeces; Fecal; Feces; Hematology; Heme; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Narrative; Point in time; Porph; Porphyrin; Random; Report; 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

Porphyrins Nar (Stl) [Interp]Porphyrins [Interpretation] in Stool NarrativePorphyrins Stl-ImpPorphyrinsCHEMInterpretation of Porphyrins test result, StoolImp

Frequently asked questions

Code details

Code49290-0
SystemLOINC
Display namePorphyrins Nar (Stl) [Interp]
DescriptionPorphyrins
Short namePorphyrins Stl-Imp
ComponentPorphyrins
PropertyImp
TimingPt
System (specimen)Stool
ScaleNar
ClassCHEM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.21

Consumer names

Interpretation of Porphyrins test result, Stool

Part names

PorphyrinsImpPtStoolNarImpression/interpretation of studyPoint in time (spot)

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.

LOINC Code 49290-0 | HealthAssure