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LOINC Code 17259-3: Methadone.long acting metabolite [Mass/Vol]

17259-3 is a LOINC code used to identify Methadone.long acting metabolite [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 Methadone.long acting metabolite. 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 Methadone.long acting metabolite. 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: DEPRECATED
  • Order vs observation: Both

What it does not mean

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

Key facts

  • Deprecated Methadone.long acting metabolite [Mass/volume] in Serum or Plasma
  • Methadone.long acting metabolite
  • Dolophin; Dolophine; DRUG/TOXICOLOGY; Drugs; LA Methadone Metab; Level; Mass concentration; Metab; Metabolites; Metb; METD; Methadose; MTD; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Methadone.long acting metabolite [Mass/Vol]Deprecated Methadone.long acting metabolite [Mass/volume] in Serum or PlasmaDeprecated LA Methadone Metab SerPl-mCncMethadone.long acting metaboliteDRUG/TOXMethadone.long acting metabolite, BloodMCnc

Frequently asked questions

Code details

Code17259-3
SystemLOINC
Display nameMethadone.long acting metabolite [Mass/Vol]
DescriptionMethadone.long acting metabolite
Short nameDeprecated LA Methadone Metab SerPl-mCnc
ComponentMethadone.long acting metabolite
PropertyMCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassDRUG/TOX
Example unitsng/mL
StatusDEPRECATED
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.81

Consumer names

Methadone.long acting metabolite, Blood

Part names

Methadone.long acting metaboliteMCncPtSer/PlasQnMass 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.