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 43923-2: Beta hydroxybutyrate Ql

Name: LOINC Code 43923-2: Beta hydroxybutyrate Ql
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

43923-2 is a LOINC code used to identify Beta hydroxybutyrate Ql 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 Beta hydroxybutyrate. 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 Beta hydroxybutyrate. 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

Beta hydroxybutyrate [Presence] in Serum or Plasma
Beta hydroxybutyrate
3-hydroxybutyrate; 3-hydroxybutyric acid; B; Beta hydroxy butyrate; Beta hydroxybutyric acid; Betahydroxybutyrate; Betahydroxybutyric acid; BHB; BOHB; B-OH-Butyr; Chemistry; Hydroxybutyric acid; Ordinal; Pl; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Screen; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for Beta hydroxybutyrate Ql (43923-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Beta hydroxybutyrate QlBeta hydroxybutyrate [Presence] in Serum or PlasmaB-OH-Butyr SerPl QlBeta hydroxybutyrateCHEMBeta hydroxybutyrate, BloodPrThr

Frequently asked questions

Code details

Code43923-2

SystemLOINC

Display nameBeta hydroxybutyrate Ql

DescriptionBeta hydroxybutyrate

Short nameB-OH-Butyr SerPl Ql

ComponentBeta hydroxybutyrate

PropertyPrThr

TimingPt

System (specimen)Ser/Plas

ScaleOrd

ClassCHEM

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.17

Last changed2.56

Consumer names

Beta hydroxybutyrate, Blood

Part names

Beta hydroxybutyratePrThrPtSer/PlasOrdPresence or ThresholdPoint 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.