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LOINC Code 14940-1: Uroporphyrin 1 isomer [Moles/Vol]

14940-1 is a LOINC code used to identify Uroporphyrin 1 isomer [Moles/Vol] 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 1 isomer. It is commonly used with the system or sample type Ser/Plas.

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 Uroporphyrin 1 isomer. It is commonly used with the system or sample type Ser/Plas.

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 1 isomer [Moles/volume] in Serum or Plasma
  • Uroporphyrin 1 isomer
  • Chemistry; Hematology; Heme; i; Isom; Level; Octacarboxyl porphyrin; Octacarboxylporphyrin; Octacarboxyphyrin; Pl; Plasma; Plsm; Point in time; Porphyria; Porphyria cutanea tarda; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration; Urophorph; Uropor1; Uroporphyrin I

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 1 isomer [Moles/Vol]Uroporphyrin 1 isomer [Moles/volume] in Serum or PlasmaUropor1 SerPl-sCncUroporphyrin 1 isomerCHEMUroporphyrin 1 isomer, BloodSCnc

Frequently asked questions

Code details

Code14940-1
SystemLOINC
Display nameUroporphyrin 1 isomer [Moles/Vol]
DescriptionUroporphyrin 1 isomer
Short nameUropor1 SerPl-sCnc
ComponentUroporphyrin 1 isomer
PropertySCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example unitsnmol/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0k
Last changed2.34

Consumer names

Uroporphyrin 1 isomer, Blood

Part names

Uroporphyrin 1 isomerSCncPtSer/PlasQnSubstance ConcentrationPoint in time (spot)Serum or Plasma

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.