LOINC

LOINC Code 16321-2: Acyl carnitine [Mass/Vol]

16321-2 is a LOINC code used to identify Acyl carnitine [Mass/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 Acyl carnitine. 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 Acyl carnitine. 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: DEPRECATED

What it does not mean

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

Key facts

  • Deprecated Acyl carnitine [Mass/volume] in Serum or Plasma
  • Acyl carnitine
  • Carnitine.total; Chemistry; Level; Mass concentration; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

Acyl carnitine [Mass/Vol]Deprecated Acyl carnitine [Mass/volume] in Serum or PlasmaDeprecated Acyl carnitine SerPl-mCncAcyl carnitineCHEMAcyl Carnitine, BloodMCnc

Frequently asked questions

Code details

Code16321-2
SystemLOINC
Display nameAcyl carnitine [Mass/Vol]
DescriptionAcyl carnitine
Short nameDeprecated Acyl carnitine SerPl-mCnc
ComponentAcyl carnitine
PropertyMCnc
TimingPt
System (specimen)Ser/Plas
ScaleQn
ClassCHEM
StatusDEPRECATED

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.36

Consumer names

Acyl Carnitine, Blood

Part names

Acyl carnitineMCncPtSer/PlasQnMass 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.

LOINC Code 16321-2 | HealthAssure