LOINCActiveObservation

LOINC Code 35178-3: Omega 3 fatty acids (w3) [Moles/Vol]

35178-3 is a LOINC code used to identify Omega 3 fatty acids (w3) [Moles/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 Fatty acids.omega 3. 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 Fatty acids.omega 3. 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: Observation

What it does not mean

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

Key facts

  • Omega 3 fatty acids (w3) [Moles/volume] in Serum or Plasma
  • Fatty acids.omega 3
  • Acd; Acid; Chemistry; Fatty acid; III; Level; Lipid; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration; w3 FA

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

Omega 3 fatty acids (w3) [Moles/Vol]Omega 3 fatty acids (w3) [Moles/volume] in Serum or Plasmaw3 FA SerPl-sCncFatty acids.omega 3CHEMOmega 3 fatty acids (w3), BloodSCnc

Frequently asked questions

Code details

Code35178-3
SystemLOINC
Display nameOmega 3 fatty acids (w3) [Moles/Vol]
DescriptionFatty acids.omega 3
Short namew3 FA SerPl-sCnc
ComponentFatty acids.omega 3
PropertySCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example unitsmmol/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.11
Last changed2.73

Consumer names

Omega 3 fatty acids (w3), Blood

Part names

Fatty acids.omega 3SCncPtSer/PlasQnOmega 3 fatty acids (w3)Substance 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 35178-3 | HealthAssure