LOINCActiveObservation

LOINC Code 1774-9: Fatty acids.very long chain C26:0 (Hexacosanoate)/C22:0 (Docosanoate) [Mass ratio]

1774-9 is a LOINC code used to identify Fatty acids.very long chain C26:0 (Hexacosanoate)/C22:0 (Docosanoate) [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.very long chain.C26:0/C22:0. 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.very long chain.C26:0/C22:0. 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 C260 (Hexacosanoate)/C22:0 (Docosanoate) [Mass Ratio] in Serum or Plasma
Fatty acids.very long chain.C260/C22:0
Acd; Acid; Aliphatic carboxylate; C260; Cerotiate; Cerotic acid; Chains; Chemistry; Chn; Fatty acid; Hexacosanoate; Hexacosanoic acid; Lipid; Mass concentration ratio; Mass ratio; MCRto; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; VLC; VLCF; VLCFA; VLCFA C26:0; VLCFA C26:0/C22:0

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 C26:0 (Hexacosanoate)/C22:0 (Docosanoate) [Mass ratio]Fatty acids.very long chain C26:0 (Hexacosanoate)/C22:0 (Docosanoate) [Mass Ratio] in Serum or PlasmaVLCFA C26:0/C22:0 SerPlFatty acids.very long chain.C26:0/C22:0CHEMFatty Acids.very Long Chain C26:0 (Hexacosanoate)/C22:0 (Docosanoate), BloodMRto

Frequently asked questions

Code details

Code1774-9
SystemLOINC
Display nameFatty acids.very long chain C26:0 (Hexacosanoate)/C22:0 (Docosanoate) [Mass ratio]
DescriptionFatty acids.very long chain.C26:0/C22:0
Short nameVLCFA C26:0/C22:0 SerPl
ComponentFatty acids.very long chain.C26:0/C22:0
PropertyMRto
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.73

Consumer names

Fatty Acids.very Long Chain C26:0 (Hexacosanoate)/C22:0 (Docosanoate), Blood

Part names

Fatty acids.very long chain.C26:0/C22:0MRtoPtSer/PlasQnMass 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.

LOINC Code 1774-9 | HealthAssure