LOINCActiveBoth

LOINC Code 74936-6: QUEtiapine trough [Mass/Vol]

74936-6 is a LOINC code used to identify QUEtiapine trough [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 QUEtiapine^trough. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 QUEtiapine^trough. It is commonly used with the system or sample type Ser/Plas.

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

  • QUEtiapine [Mass/volume] in Serum or Plasma --trough
  • QUEtiapine^trough
  • DRUG/TOXICOLOGY; Drugs; Ketipinor; Level; Mass concentration; Pl; Plasma; Plsm; Point in time; Pre; Predose; Pre-dose; QNT; Quan; Quant; Quantitative; Random; Seroquel; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Xeroquel

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

QUEtiapine trough [Mass/Vol]QUEtiapine [Mass/volume] in Serum or Plasma --troughQUEtiapine Trough SerPl-mCncQUEtiapine^troughDRUG/TOXQUEtiapine trough, BloodMCnc

Frequently asked questions

Code details

Code74936-6
SystemLOINC
Display nameQUEtiapine trough [Mass/Vol]
DescriptionQUEtiapine^trough
Short nameQUEtiapine Trough SerPl-mCnc
ComponentQUEtiapine^trough
PropertyMCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassDRUG/TOX
Example unitsug/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.48
Last changed2.48

Consumer names

QUEtiapine trough, Blood

Part names

QUEtiapine^troughMCncPtSer/PlasQnMass ConcentrationPoint in time (spot)Serum or Plasma

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 74936-6 | HealthAssure