LOINCActiveObservation

LOINC Code 19684-0: Psilocin cutoff Screen (U) [Mass/Vol]

19684-0 is a LOINC code used to identify Psilocin 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 Psilocin 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 Psilocin 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

  • Psilocin cutoff [Mass/volume] in Urine for Screen method
  • Psilocin cutoff
  • 4-hydroxy-dimethyltryptamine; CtO; DRUG/TOXICOLOGY; Drugs; Level; Mass concentration; Point in time; 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

Psilocin cutoff Screen (U) [Mass/Vol]Psilocin cutoff [Mass/volume] in Urine for Screen methodPsilocin CtO Ur Scn-mCncPsilocin cutoffDRUG/TOXPsilocin cutoff, UrineMCnc

Frequently asked questions

Code details

Code19684-0
SystemLOINC
Display namePsilocin cutoff Screen (U) [Mass/Vol]
DescriptionPsilocin cutoff
Short namePsilocin CtO Ur Scn-mCnc
ComponentPsilocin 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

Psilocin cutoff, Urine

Part names

Psilocin 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 19684-0 | HealthAssure