LOINCActiveBoth

LOINC Code 46259-8: Morphine Free Screen Ql

46259-8 is a LOINC code used to identify Morphine Free Screen Ql 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 Morphine.free. It is commonly used with the system or sample type Ser/Plas.

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 Morphine.free. 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: Both
  • Method: Screen

What it does not mean

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

Key facts

  • Morphine Free [Presence] in Serum or Plasma by Screen method
  • Morphine.free
  • c260; DRUG/TOXICOLOGY; Drugs; FR; Morphine Free; Morphine sulfate; MS; MSO4; Non-protein bound; OMPH; Ordinal; Pl; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Scn; Scr; Screen; Scrn; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; unconjugated morphine

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

Morphine Free Screen QlMorphine Free [Presence] in Serum or Plasma by Screen methodMorphine Free SerPl Ql ScnMorphine.freeDRUG/TOXFree morphine, BloodPrThr

Frequently asked questions

Code details

Code46259-8
SystemLOINC
Display nameMorphine Free Screen Ql
DescriptionMorphine.free
Short nameMorphine Free SerPl Ql Scn
ComponentMorphine.free
PropertyPrThr
TimingPt
System (specimen)Ser/Plas
ScaleOrd
MethodScreen
ClassDRUG/TOX
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.19
Last changed2.56

Consumer names

Free morphine, Blood

Part names

Morphine.freePrThrPtSer/PlasOrdScreenMorphine FreePresence or ThresholdPoint in time (spot)Serum or PlasmaToxicology screen

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 46259-8 | HealthAssure