LOINCActiveObservation

LOINC Code 34731-0: APOE gene allele 1 Molgen Nom (Bld/Tiss) [ID]

34731-0 is a LOINC code used to identify APOE gene allele 1 Molgen Nom (Bld/Tiss) [ID] 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 APOE gene allele 1. It is commonly used with the system or sample type Bld/Tiss.

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 APOE gene allele 1. It is commonly used with the system or sample type Bld/Tiss.

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
  • Method: Molgen

What it does not mean

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

Key facts

  • APOE gene allele 1 [Identifier] in Blood or Tissue by Molecular genetics method
  • APOE gene allele 1
  • AD2; APO-E; APOE allele1; apolipoprotein E; Apolipoprotein E gene; Blood; Genetics; Heredity; Heritable; i; Ident; Identifier; Inherited; LDLCQ5; LPG; MGC1571; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.MUTATIONS; Neuro; Neurology; Nominal; PCR; Point in time; Random; Tissue; Tissue, unspecified; WB; Whole blood; Whole blood or Tissue

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

APOE gene allele 1 Molgen Nom (Bld/Tiss) [ID]APOE gene allele 1 [Identifier] in Blood or Tissue by Molecular genetics methodAPOE allele1 Bld/TAPOE gene allele 1MOLPATH.MUTAPOE gene allele 1, Blood or tissue specimenID

Frequently asked questions

Code details

Code34731-0
SystemLOINC
Display nameAPOE gene allele 1 Molgen Nom (Bld/Tiss) [ID]
DescriptionAPOE gene allele 1
Short nameAPOE allele1 Bld/T
ComponentAPOE gene allele 1
PropertyID
TimingPt
System (specimen)Bld/Tiss
ScaleNom
MethodMolgen
ClassMOLPATH.MUT
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.11
Last changed2.73

Consumer names

APOE gene allele 1, Blood or tissue specimen

Part names

APOE gene allele 1IDPtBld/TissNomMolgenIdentifierPoint in time (spot)Blood or TissueMolecular genetics

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.