What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINCActiveOrder

LOINC Code 43677-4: Fatty acid very long chain (C22-C26) panel

Name: LOINC Code 43677-4: Fatty acid very long chain (C22-C26) panel
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:28.588Z

43677-4 is a LOINC code used to identify Fatty acid very long chain (C22-C26) panel 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 acid panel.very long chain C22-C26. 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 acid panel.very long chain C22-C26. 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: Order
Panel type: Panel

What it does not mean

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

Key facts

Fatty acid very long chain (C22-C26) panel - Serum or Plasma
Fatty acid panel.very long chain C22-C26
Acd; Acids; Chains; Chemistry; Chn; Pan; PANEL.CHEMISTRY; Panl; Pl; Plasma; Plsm; Pnl; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; Very long chain FA profile; VLC; VLCFA C22-C26 Pnl; VLCFA profile

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 acid very long chain (C22-C26) panelFatty acid very long chain (C22-C26) panel - Serum or PlasmaVLCFA C22-C26 Pnl SerPlFatty acid panel.very long chain C22-C26PANEL.CHEMFatty Acid Very Long Chain (C22-C26) Panel, Blood-

Frequently asked questions

Code details

Code43677-4

SystemLOINC

Display nameFatty acid very long chain (C22-C26) panel

DescriptionFatty acid panel.very long chain C22-C26

Short nameVLCFA C22-C26 Pnl SerPl

ComponentFatty acid panel.very long chain C22-C26

Property-

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassPANEL.CHEM

StatusACTIVE

Order/ObservationOrder

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.54

Consumer names

Fatty Acid Very Long Chain (C22-C26) Panel, Blood

Part names

Fatty acid panel.very long chain C22-C26-PtSer/PlasQnFatty acid very long chain (C22-C26) panelPoint 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.