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.

LOINCActiveObservation

LOINC Code 33478-9: Fatty acids.very long chain pattern [Interp]

Name: LOINC Code 33478-9: Fatty acids.very long chain pattern [Interp]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:20.069Z

33478-9 is a LOINC code used to identify Fatty acids.very long chain pattern [Interp] 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 pattern. 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 pattern. 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 pattern [Interpretation] in Serum or Plasma
Fatty acids.very long chain pattern
Acd; Acid; Aliphatic carboxylate; Chains; Chemistry; Chn; Fatty acid; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Lipid; Nominal; Pl; Plasma; Plsm; Point in time; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; VLC; VLCF; VLCFA; VLCFA Pattern

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 pattern [Interp]Fatty acids.very long chain pattern [Interpretation] in Serum or PlasmaVLCFA Pattern SerPl-ImpFatty acids.very long chain patternCHEMFatty acids.very long chain pattern, BloodImp

Frequently asked questions

Code details

Code33478-9

SystemLOINC

Display nameFatty acids.very long chain pattern [Interp]

DescriptionFatty acids.very long chain pattern

Short nameVLCFA Pattern SerPl-Imp

ComponentFatty acids.very long chain pattern

PropertyImp

TimingPt

System (specimen)Ser/Plas

ScaleNom

ClassCHEM

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 pattern, Blood

Part names

Fatty acids.very long chain patternImpPtSer/PlasNomImpression/interpretation of studyPoint 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.