LOINCActiveObservation

LOINC Code 33036-5: Fatty acids.very long chain C26:1 (Hexacosenoate) [Moles/Vol]

33036-5 is a LOINC code used to identify Fatty acids.very long chain C26:1 (Hexacosenoate) [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.very long chain.C26:1. 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 Fatty acids.very long chain.C26:1. 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

Fatty acids.very long chain C261 (Hexacosenoate) [Moles/volume] in Serum or Plasma
Fatty acids.very long chain.C261
Acd; Acid; Aliphatic carboxylate; C261; Chains; Chemistry; Chn; Fatty acid; Hexacosenoate; Hexacosenoic acid; i; Level; Lipid; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Substance concentration; VLC; VLCF; VLCFA; VLCFA C26:1

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

Fatty acids.very long chain C26:1 (Hexacosenoate) [Moles/Vol]Fatty acids.very long chain C26:1 (Hexacosenoate) [Moles/volume] in Serum or PlasmaVLCFA C26:1 SerPl-sCncFatty acids.very long chain.C26:1CHEMFatty Acids.very Long Chain C26:1 (Hexacosenoate), BloodSCnc

Frequently asked questions

Code details

Code33036-5
SystemLOINC
Display nameFatty acids.very long chain C26:1 (Hexacosenoate) [Moles/Vol]
DescriptionFatty acids.very long chain.C26:1
Short nameVLCFA C26:1 SerPl-sCnc
ComponentFatty acids.very long chain.C26:1
PropertySCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example unitsumol/L
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.09
Last changed2.73

Consumer names

Fatty Acids.very Long Chain C26:1 (Hexacosenoate), Blood

Part names

Fatty acids.very long chain.C26:1SCncPtSer/PlasQnFatty acids.very long chain C26:1 (Hexacosenoate)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 33036-5 | HealthAssure