LOINCActiveBoth

LOINC Code 8239-6: Phencyclidine (Unknown substance) [Mass/Vol]

8239-6 is a LOINC code used to identify Phencyclidine (Unknown substance) [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 Phencyclidine. It is commonly used with the system or sample type Unk sub.

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 Phencyclidine. It is commonly used with the system or sample type Unk sub.

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

What it does not mean

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

Key facts

  • Phencyclidine [Mass/volume] in Unknown substance
  • Phencyclidine
  • Addiction; Angel dust; DRUG/TOXICOLOGY; Drugs; Drugs of abuse; Illicit; Level; Mass concentration; PCP; Point in time; PotentialForAbuse; QNT; Quan; Quant; Quantitative; Random; Sernylan; Unknown substance; Usub

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

Phencyclidine (Unknown substance) [Mass/Vol]Phencyclidine [Mass/volume] in Unknown substancePCP Usub-mCncPhencyclidineDRUG/TOXPhencyclidine, Unknown substanceMCnc

Frequently asked questions

Code details

Code8239-6
SystemLOINC
Display namePhencyclidine (Unknown substance) [Mass/Vol]
DescriptionPhencyclidine
Short namePCP Usub-mCnc
ComponentPhencyclidine
PropertyMCnc
TimingPt
System (specimen)Unk sub
ScaleQn
ClassDRUG/TOX
Example unitsng/dL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0h(2)
Last changed2.34

Consumer names

Phencyclidine, Unknown substance

Part names

PhencyclidineMCncPtUnk subQnMass ConcentrationPoint in time (spot)Unknown substance

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 8239-6 | HealthAssure