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.

LOINCActiveObservation

LOINC Code 75378-0: HBV core Ab IA.rapid Ql (S/P/Bld)

Name: LOINC Code 75378-0: HBV core Ab IA.rapid Ql (S/P/Bld)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:55.158Z

75378-0 is a LOINC code used to identify HBV core Ab IA.rapid Ql (S/P/Bld) 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/Plas/Bld.

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/Plas/Bld.

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: Observation
Method: IA.rapid

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, Plasma or Blood by Rapid immunoassay
Hepatitis B virus core Ab
Hepatitis B core Ab (HBcAb) rapid tests are available in test strip and cassette formats from manufacturers in various countries including the US, Singapore, and China. Hepatitis B core Ab (HBcAb) rapid tests are useful screening tests for acute hepatitis B because HBcAb is the first antibody to appear in acute hepatitis B infections. During the window period of acute hepatitis B, (after HBsAg disappears and before HBsAb appears), HBcAb is sometimes the only serologic marker detected. High levels of HBcAb persist long term, making these rapid tests useful for detecting past history of hepatitis B infection. This term was based on, but not limited in use to, the iCare One Step HBcAb test kit which is a is a competitive colloidal gold enhanced immunoassay for the detection of anti-HBc antigen(HBcAb) in human serum or plasma. Testing can be done in approximately 15 minutes.
ABS; Aby; Antby; Anti; Antibodies; Antibody; anti-HBc; Autoantibodies; Autoantibody; Blood; 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; Ordinal; Pl; PlasBld; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Screen; SerP; SerPl; SerPlas; SerPlBld; Serum; Serum or plasma; Serum, plasma or whole blood; SR; SUDS; WB; Whole blood

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.rapid Ql (S/P/Bld)Hepatitis B virus core Ab [Presence] in Serum, Plasma or Blood by Rapid immunoassayHBV core Ab SerPlBld Ql IA.rapidHepatitis B virus core AbMICROHepatitis B virus (HBV) Core antibody, BloodPrThr

Frequently asked questions

Code details

Code75378-0

SystemLOINC

Display nameHBV core Ab IA.rapid Ql (S/P/Bld)

DescriptionHepatitis B virus core Ab

Short nameHBV core Ab SerPlBld Ql IA.rapid

ComponentHepatitis B virus core Ab

PropertyPrThr

TimingPt

System (specimen)Ser/Plas/Bld

ScaleOrd

MethodIA.rapid

ClassMICRO

StatusACTIVE

Order/ObservationObservation

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.50

Last changed2.56

Consumer names

Hepatitis B virus (HBV) Core antibody, Blood

Part names

Hepatitis B virus core AbPrThrPtSer/Plas/BldOrdIA.rapidPresence or ThresholdPoint in time (spot)Serum, Plasma or BloodRapid immunoassay

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.