LOINCActiveBoth

LOINC Code 104671-3: Leukotriene B4 LC/MS/MS (P) [Mass/Vol]

104671-3 is a LOINC code used to identify Leukotriene B4 LC/MS/MS (P) [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 B4. It is commonly used with the system or sample type Plas.

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 Leukotriene B4. It is commonly used with the system or sample type 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
  • Method: LC/MS/MS

What it does not mean

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

Key facts

  • Leukotriene B4 [Mass/volume] in Plasma by LC/MS/MS
  • Leukotriene B4
  • Chemistry; Level; LTB4; Mass Concentration; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random

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 B4 LC/MS/MS (P) [Mass/Vol]Leukotriene B4 [Mass/volume] in Plasma by LC/MS/MSLTB4 Plas LC/MS/MS-mCncLeukotriene B4CHEMLeukotriene B4, BloodMCnc

Frequently asked questions

Code details

Code104671-3
SystemLOINC
Display nameLeukotriene B4 LC/MS/MS (P) [Mass/Vol]
DescriptionLeukotriene B4
Short nameLTB4 Plas LC/MS/MS-mCnc
ComponentLeukotriene B4
PropertyMCnc
TimingPt
System (specimen)Plas
ScaleQn
MethodLC/MS/MS
ClassCHEM
Example unitsng/mL
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.78
Last changed2.78

Consumer names

Leukotriene B4, Blood

Part names

Leukotriene B4MCncPtPlasQnLC/MS/MSMass ConcentrationPoint in time (spot)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 104671-3 | HealthAssure