LOINCActiveBoth

LOINC Code 29387-8: Norpropoxyphene (Gast fld) [Mass/Vol]

29387-8 is a LOINC code used to identify Norpropoxyphene (Gast fld) [Mass/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 Norpropoxyphene. It is commonly used with the system or sample type Gast fld.

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 Norpropoxyphene. It is commonly used with the system or sample type Gast fld.

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

  • Norpropoxyphene [Mass/volume] in Gastric fluid
  • Norpropoxyphene
  • DRUG/TOXICOLOGY; Drugs; GAST; Gastric contents; Gastric fluid; Level; Mass concentration; n-desmethylproproxyphene; Norpropoxyp; Point in time; Propoxyphene metabolite; QNT; Quan; Quant; Quantitative; Random

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

Norpropoxyphene (Gast fld) [Mass/Vol]Norpropoxyphene [Mass/volume] in Gastric fluidNorpropoxyph Gast-mCncNorpropoxypheneDRUG/TOXNorpropoxyphene, Stomach fluidMCnc

Frequently asked questions

Code details

Code29387-8
SystemLOINC
Display nameNorpropoxyphene (Gast fld) [Mass/Vol]
DescriptionNorpropoxyphene
Short nameNorpropoxyph Gast-mCnc
ComponentNorpropoxyphene
PropertyMCnc
TimingPt
System (specimen)Gast fld
ScaleQn
ClassDRUG/TOX
Example unitsug/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.03
Last changed2.70

Consumer names

Norpropoxyphene, Stomach fluid

Part names

NorpropoxypheneMCncPtGast fldQnMass ConcentrationPoint in time (spot)Gastric fluid

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.