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 100428-2: Carnitine free and total and acylcarnitine panel (U)

Name: LOINC Code 100428-2: Carnitine free and total and acylcarnitine panel (U)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:16.532Z

100428-2 is a LOINC code used to identify Carnitine free and total and acylcarnitine panel (U) 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 Carnitine Free & Total & Acylcarnitine Panel. It is commonly used with the system or sample type Urine.

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 Carnitine Free & Total & Acylcarnitine Panel. It is commonly used with the system or sample type Urine.

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

Carnitine free and total and acylcarnitine panel - Urine
Carnitine Free & Total & Acylcarnitine Panel
Acyl carnitine; Acylcarni; Acylcarnitine Pnl; Carnitine + acylcarnitine Pnl; Carnitine.total; Chemistry; FR; Non-protein bound; Pan; PANEL.CHEMISTRY; Panl; Pnl; Point in time; Random; Tot; Totl; UA; UR; Urn

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

Carnitine free and total and acylcarnitine panel (U)Carnitine free and total and acylcarnitine panel - UrineCarnitine + acylcarnitine Pnl UrCarnitine Free & Total & Acylcarnitine PanelPANEL.CHEMCarnitine free and total and acylcarnitine panel, Urine-

Frequently asked questions

Code details

Code100428-2

SystemLOINC

Display nameCarnitine free and total and acylcarnitine panel (U)

DescriptionCarnitine Free & Total & Acylcarnitine Panel

Short nameCarnitine + acylcarnitine Pnl Ur

ComponentCarnitine Free & Total & Acylcarnitine Panel

Property-

TimingPt

System (specimen)Urine

Scale-

ClassPANEL.CHEM

StatusACTIVE

Order/ObservationOrder

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.73

Last changed2.78

Consumer names

Carnitine free and total and acylcarnitine panel, Urine

Part names

Carnitine free & total & acylcarnitine panel-PtUrineCarnitine free and total and acylcarnitine panelPoint in time (spot)

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.