LOINCActiveObservation

LOINC Code 90910-1: Omega 6 fatty acids (w6)/Omega 3 fatty acids (w3) (Bld) [Mass ratio]

90910-1 is a LOINC code used to identify Omega 6 fatty acids (w6)/Omega 3 fatty acids (w3) (Bld) [Mass ratio] 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 6/Fatty acids.omega 3. It is commonly used with the system or sample type Bld.

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 Fatty acids.omega 6/Fatty acids.omega 3. It is commonly used with the system or sample type Bld.

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 6 fatty acids (w6)/Omega 3 fatty acids (w3) [Mass Ratio] in Blood
  • Fatty acids.omega 6/Fatty acids.omega 3
  • Acd; Acid; Blood; Chemistry; Fatty acid; III; Lipid; Mass concentration ratio; Mass ratio; MCRto; Point in time; QNT; Quan; Quant; Quantitative; Random; w3 FA; w6 FA; WB; Whole blood

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 6 fatty acids (w6)/Omega 3 fatty acids (w3) (Bld) [Mass ratio]Omega 6 fatty acids (w6)/Omega 3 fatty acids (w3) [Mass Ratio] in Bloodw6 FA/w3 FA BldFatty acids.omega 6/Fatty acids.omega 3CHEMOmega 6 fatty acids (w6)/Omega 3 Fatty Acids (w3), BloodMRto

Frequently asked questions

Code details

Code90910-1
SystemLOINC
Display nameOmega 6 fatty acids (w6)/Omega 3 fatty acids (w3) (Bld) [Mass ratio]
DescriptionFatty acids.omega 6/Fatty acids.omega 3
Short namew6 FA/w3 FA Bld
ComponentFatty acids.omega 6/Fatty acids.omega 3
PropertyMRto
TimingPt
System (specimen)Bld
ScaleQn
ClassCHEM
Example unitsratio
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.65
Last changed2.65

Consumer names

Omega 6 fatty acids (w6)/Omega 3 Fatty Acids (w3), Blood

Part names

Fatty acids.omega 6/Fatty acids.omega 3MRtoPtBldQnMass RatioPoint in time (spot)Blood

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.