LOINCActiveBoth

LOINC Code 45306-8: Coproporphyrin 3 (Stl) [Moles/Mass]

45306-8 is a LOINC code used to identify Coproporphyrin 3 (Stl) [Moles/Mass] 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 Coproporphyrin 3. 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 Coproporphyrin 3. 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: Both

What it does not mean

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

Key facts

  • Coproporphyrin 3 [Moles/mass] in Stool
  • Coproporphyrin 3
  • Bowel movement; Chemistry; Copro; Copro3; Coproporph; Coproporphyrin III; Coproporphyrins; Faecal; Faeces; Fecal; Feces; Hematology; Heme; III; Point in time; QNT; Quan; Quant; Quantitative; Random; Stl; Stool = Fecal; Substance Content; Tetracarboxyl porphyrin; Tetracarboxylporphyrin; Tetracarboxylporphyrins; Tetracarboxyporphyrin

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

Coproporphyrin 3 (Stl) [Moles/Mass]Coproporphyrin 3 [Moles/mass] in StoolCopro3 Stl-sCntCoproporphyrin 3CHEMCoproporphyrin 3, StoolSCnt

Frequently asked questions

Code details

Code45306-8
SystemLOINC
Display nameCoproporphyrin 3 (Stl) [Moles/Mass]
DescriptionCoproporphyrin 3
Short nameCopro3 Stl-sCnt
ComponentCoproporphyrin 3
PropertySCnt
TimingPt
System (specimen)Stool
ScaleQn
ClassCHEM
Example unitsnmol/g
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.70

Consumer names

Coproporphyrin 3, Stool

Part names

Coproporphyrin 3SCntPtStoolQnSubstance ContentPoint 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 45306-8 | HealthAssure