LOINCActiveObservation

LOINC Code 35411-8: Trienoate (C20:3w9)/Arachidonate (C20:4w6) [Molar ratio]

35411-8 is a LOINC code used to identify Trienoate (C20:3w9)/Arachidonate (C20:4w6) [Molar 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 Trienoate/Arachidonate. It is commonly used with the system or sample type Ser/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 Trienoate/Arachidonate. 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

Trienoate (C203w9)/Arachidonate (C20:4w6) [Molar ratio] in Serum or Plasma
Trienoate/Arachidonate
5,8,11,14 Eicosatetraenoic acid; 5,8,11-eicosatrienoic acid 203 w9; AA; Arachidonic acid; Arch acid; C20:4w6; Chemistry; Eicosatetraenoate; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; Scrto; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration ratio; Substance ratio; Trienoic acid

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

Trienoate (C20:3w9)/Arachidonate (C20:4w6) [Molar ratio]Trienoate (C20:3w9)/Arachidonate (C20:4w6) [Molar ratio] in Serum or PlasmaTrienoate/AA SerPl-sRtoTrienoate/ArachidonateCHEMTrienoate (C20:3w9)/Arachidonate (C20:4w6), BloodSRto

Frequently asked questions

Code details

Code35411-8
SystemLOINC
Display nameTrienoate (C20:3w9)/Arachidonate (C20:4w6) [Molar ratio]
DescriptionTrienoate/Arachidonate
Short nameTrienoate/AA SerPl-sRto
ComponentTrienoate/Arachidonate
PropertySRto
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example unitsratio
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.13
Last changed2.73

Consumer names

Trienoate (C20:3w9)/Arachidonate (C20:4w6), Blood

Part names

Trienoate/ArachidonateSRtoPtSer/PlasQnSubstance RatioPoint 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.