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.

LOINCActiveBoth

LOINC Code 57937-5: Cholesterol in HDL 3a [Mass/Vol]

Name: LOINC Code 57937-5: Cholesterol in HDL 3a [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

57937-5 is a LOINC code used to identify Cholesterol in HDL 3a [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 Cholesterol.in HDL 3a. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Cholesterol.in HDL 3a. 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

Cholesterol in HDL 3a [Mass/volume] in Serum or Plasma
Cholesterol.in HDL 3a
Cardio; Cardiology; Chemistry; Chol; Choles; Cholest; Cholesterol total; Cholesterols; HDLc; HDL-C; HDLc 3a; Heart Disease; High density lipoprotein cholesterols; Level; Lipid; Mass concentration; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; TCHHDL

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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Cholesterol in HDL 3a [Mass/Vol] (57937-5)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Cholesterol in HDL 3a [Mass/Vol]Cholesterol in HDL 3a [Mass/volume] in Serum or PlasmaHDLc 3a SerPl-mCncCholesterol.in HDL 3aCHEMHDL 3a cholesterol, BloodMCnc

Frequently asked questions

Code details

Code57937-5

SystemLOINC

Display nameCholesterol in HDL 3a [Mass/Vol]

DescriptionCholesterol.in HDL 3a

Short nameHDLc 3a SerPl-mCnc

ComponentCholesterol.in HDL 3a

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

ClassCHEM

Example unitsmg/dL

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.29

Last changed2.34

Consumer names

HDL 3a cholesterol, Blood

Part names

Cholesterol.in HDL 3aMCncPtSer/PlasQnCholesterol in HDL 3aMass 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.