LOINC

LOINC Code 6904-7: Phenothiazine Ql (U)

6904-7 is a LOINC code used to identify Phenothiazine Ql (U) 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 Phenothiazine. 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 Phenothiazine. 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 Phenothiazine
  • Phenothiazine
  • DRUG/TOXICOLOGY; Drugs; Level; Mass concentration; Ordinal; Point in time; QL; Qual; Qualitative; Random; Screen; 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

Phenothiazine Ql (U)Deprecated PhenothiazineDeprecated Phenothiaz Ur QlPhenothiazineDRUG/TOXPhenothiazine, UrineMCnc

Frequently asked questions

Code details

Code6904-7
SystemLOINC
Display namePhenothiazine Ql (U)
DescriptionPhenothiazine
Short nameDeprecated Phenothiaz Ur Ql
ComponentPhenothiazine
PropertyMCnc
TimingPt
System (specimen)Urine
ScaleOrd
ClassDRUG/TOX
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0h(2)
Last changed2.36

Consumer names

Phenothiazine, Urine

Part names

PhenothiazineMCncPtUrineOrdMass 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.

LOINC Code 6904-7 | HealthAssure