LOINC

LOINC Code 21050-0: 6-Monoacetylmorphine (6-MAM) (U) [Mass/Vol]

21050-0 is a LOINC code used to identify 6-Monoacetylmorphine (6-MAM) (U) [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 6-Monoacetylmorphine. It is commonly used with the system or sample type Urine.

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 6-Monoacetylmorphine. It is commonly used with the system or sample type Urine.

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

What it does not mean

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

Key facts

  • Deprecated Acetylmorphine [Mass/volume] in Urine
  • 6-Monoacetylmorphine
  • 6 MAM; 6 mono acetyl morphine; 6-acetylmorphine; 6MAM; Acetylmorphine; Addiction; DRUG/TOXICOLOGY; Drugs; Drugs of abuse; Heroin metabolite; Illicit; Level; MAM; Mass concentration; Point in time; PotentialForAbuse; QNT; Quan; Quant; Quantitative; Random; UA; UR; Urn

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

6-Monoacetylmorphine (6-MAM) (U) [Mass/Vol]Deprecated Acetylmorphine [Mass/volume] in UrineDeprecated 6MAM Ur-mCnc6-MonoacetylmorphineDRUG/TOX6-Monoacetylmorphine (6-MAM), UrineMCnc

Frequently asked questions

Code details

Code21050-0
SystemLOINC
Display name6-Monoacetylmorphine (6-MAM) (U) [Mass/Vol]
Description6-Monoacetylmorphine
Short nameDeprecated 6MAM Ur-mCnc
Component6-Monoacetylmorphine
PropertyMCnc
TimingPt
System (specimen)Urine
ScaleQn
ClassDRUG/TOX
Example unitsng/mL
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.70

Consumer names

6-Monoacetylmorphine (6-MAM), Urine

Part names

6-MonoacetylmorphineMCncPtUrineQnMass ConcentrationPoint in time (spot)

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.