LOINCActiveBoth

LOINC Code 79701-9: Fatty acids.very long chain.C22:1n9 (Erucate) [Moles/Vol]

79701-9 is a LOINC code used to identify Fatty acids.very long chain.C22:1n9 (Erucate) [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.C22:1n9. 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.C22:1n9. 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: Both

What it does not mean

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

Key facts

Fatty acids.very long chain.C221n9 (Erucate) [Moles/volume] in Serum or Plasma
Fatty acids.very long chain.C221n9
Acd; Acid; Aliphatic carboxylate; Chains; Chemistry; Chn; Erucate; Erucic acid; Esoteric; Fatty acid; 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.C221n9

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.C22:1n9 (Erucate) [Moles/Vol]Fatty acids.very long chain.C22:1n9 (Erucate) [Moles/volume] in Serum or PlasmaVLCFA.C22:1n9 SerPl-sCncFatty acids.very long chain.C22:1n9CHEMFatty Acids.very Long Chain.C22:1n9 (Erucate), BloodSCnc

Frequently asked questions

Code details

Code79701-9
SystemLOINC
Display nameFatty acids.very long chain.C22:1n9 (Erucate) [Moles/Vol]
DescriptionFatty acids.very long chain.C22:1n9
Short nameVLCFA.C22:1n9 SerPl-sCnc
ComponentFatty acids.very long chain.C22:1n9
PropertySCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
Example unitsmmol/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.54
Last changed2.56

Consumer names

Fatty Acids.very Long Chain.C22:1n9 (Erucate), Blood

Part names

Fatty acids.very long chain.C22:1n9SCncPtSer/PlasQnFatty acids.very long chain.C22:1n9 (Erucate)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.