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.

LOINCBoth

LOINC Code 5187-0: HBV core Ab IA Qn (S)

Name: LOINC Code 5187-0: HBV core Ab IA Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:35.574Z

5187-0 is a LOINC code used to identify HBV core Ab IA Qn (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 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 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: DEPRECATED
Order vs observation: Both
Method: IA

What it does not mean

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

Key facts

Deprecated Hepatitis B virus core Ab [Units/volume] in Serum by Immunoassay
Hepatitis B virus core Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; anti-HBc; Arbitrary concentration; Autoantibodies; Autoantibody; EIA; ELFA; ELISA; Enzyme immunoassay; HBc; HBV; HBV core; Hep; Hep B; Hepatis; Hepatit; Hepatitis Bc; Hepatology; HepB; IAA; ID; Infectious Disease; InfectiousDisease; Liver; MEIA; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; SUDS

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

HBV core Ab IA Qn (S)Deprecated Hepatitis B virus core Ab [Units/volume] in Serum by ImmunoassayDeprecated HBV core Ab Ser IA-aCncHepatitis B virus core AbMICROHepatitis B virus (HBV) Core antibody, BloodACnc

Frequently asked questions

Code details

Code5187-0

SystemLOINC

Display nameHBV core Ab IA Qn (S)

DescriptionHepatitis B virus core Ab

Short nameDeprecated HBV core Ab Ser IA-aCnc

ComponentHepatitis B virus core Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

MethodIA

ClassMICRO

StatusDEPRECATED

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0

Last changed2.79

Consumer names

Hepatitis B virus (HBV) Core antibody, Blood

Part names

Hepatitis B virus core AbACncPtSerQnIAArbitrary ConcentrationPoint in time (spot)SerumImmunoassay

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.