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 16933-4: HBV core Ab Ql (S)

Name: LOINC Code 16933-4: HBV core Ab Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

16933-4 is a LOINC code used to identify HBV core Ab Ql (S) 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 Hepatitis B virus core Ab. It is commonly used with the system or sample type Ser.

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 Hepatitis B virus core Ab. It is commonly used with the system or sample type Ser.

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

Hepatitis B virus core Ab [Presence] in Serum
Hepatitis B virus core Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; anti-HBc; Autoantibodies; Autoantibody; HBc; HBV; HBV core; Hep; Hep B; Hepatis; Hepatit; Hepatitis Bc; Hepatology; HepB; ID; Infectious Disease; InfectiousDisease; Liver; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; Serum; SR; UniversalLabOrders

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 HBV core Ab Ql (S) (16933-4)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

HBV core Ab Ql (S)Hepatitis B virus core Ab [Presence] in SerumHBV core Ab Ser QlHepatitis B virus core AbMICROHepatitis B virus (HBV) Core antibody, BloodPrThr

Frequently asked questions

Code details

Code16933-4

SystemLOINC

Display nameHBV core Ab Ql (S)

DescriptionHepatitis B virus core Ab

Short nameHBV core Ab Ser Ql

ComponentHepatitis B virus core Ab

PropertyPrThr

TimingPt

System (specimen)Ser

ScaleOrd

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.73

Consumer names

Hepatitis B virus (HBV) Core antibody, Blood

Part names

Hepatitis B virus core AbPrThrPtSerOrdPresence or ThresholdPoint in time (spot)Serum

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.