LOINCActiveObservation

LOINC Code 33344-3: Leukotriene E4 (U) [Mass/Vol]

33344-3 is a LOINC code used to identify Leukotriene E4 (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 Leukotriene E4. It is commonly used with the system or sample type Urine.

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 Leukotriene E4. 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

What it does not mean

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

Key facts

  • Leukotriene E4 [Mass/volume] in Urine
  • Leukotriene E4
  • 7,9,11,14-Eicosatetraenoic acid, 6-((2-amino-2-carboxyethyl)thio)-5-hydroxy-, (5S-(5R*,6S*(S*),7E,9E,11Z,14Z)); Chemistry; Level; LTE4; Mass Concentration; Point in time; QNT; Quan; Quant; Quantitative; Random; 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

Leukotriene E4 (U) [Mass/Vol]Leukotriene E4 [Mass/volume] in UrineLTE4 Ur-mCncLeukotriene E4CHEMLeukotriene E4, UrineMCnc

Frequently asked questions

Code details

Code33344-3
SystemLOINC
Display nameLeukotriene E4 (U) [Mass/Vol]
DescriptionLeukotriene E4
Short nameLTE4 Ur-mCnc
ComponentLeukotriene E4
PropertyMCnc
TimingPt
System (specimen)Urine
ScaleQn
ClassCHEM
Example unitspg/mL
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.70

Consumer names

Leukotriene E4, Urine

Part names

Leukotriene E4MCncPtUrineQnMass 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 33344-3 | HealthAssure