LOINCActiveObservation

LOINC Code 19664-2: Phenmetrazine cutoff Screen (U) [Mass/Vol]

19664-2 is a LOINC code used to identify Phenmetrazine cutoff Screen (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 Phenmetrazine cutoff. 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 Phenmetrazine cutoff. 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: ACTIVE
  • Order vs observation: Observation
  • Method: Screen

What it does not mean

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

Key facts

  • Phenmetrazine cutoff [Mass/volume] in Urine for Screen method
  • Phenmetrazine cutoff
  • CtO; DRUG/TOXICOLOGY; Drugs; Level; Mass concentration; Oxazimedrine; Point in time; Preludin endurets; QNT; Quan; Quant; Quantitative; Random; Scn; Scr; Scrn; 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

Phenmetrazine cutoff Screen (U) [Mass/Vol]Phenmetrazine cutoff [Mass/volume] in Urine for Screen methodPhenmetrazine CtO Ur Scn-mCncPhenmetrazine cutoffDRUG/TOXPhenmetrazine cutoff, UrineMCnc

Frequently asked questions

Code details

Code19664-2
SystemLOINC
Display namePhenmetrazine cutoff Screen (U) [Mass/Vol]
DescriptionPhenmetrazine cutoff
Short namePhenmetrazine CtO Ur Scn-mCnc
ComponentPhenmetrazine cutoff
PropertyMCnc
TimingPt
System (specimen)Urine
ScaleQn
MethodScreen
ClassDRUG/TOX
Example unitsng/mL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.44

Consumer names

Phenmetrazine cutoff, Urine

Part names

Phenmetrazine cutoffMCncPtUrineQnScreenMass ConcentrationPoint in time (spot)Toxicology 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 19664-2 | HealthAssure