LOINCActiveBoth

LOINC Code 13954-3: HBV e Ag IA Ql

13954-3 is a LOINC code used to identify HBV e Ag IA 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 Hepatitis B virus little e Ag. It is commonly used with the system or sample type Ser/Plas.

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 little e Ag. 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
  • Method: IA

What it does not mean

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

Key facts

  • Hepatitis B virus e Ag [Presence] in Serum or Plasma by Immunoassay
  • Hepatitis B virus little e Ag
  • Antigen; Antigens; e; EIA; ELFA; ELISA; Enzyme immunoassay; HB envelope; Hbe; HBEAG; HBV; HBV e; HBV e Ag; Hep; Hep B; Hep Be; Hepatis; Hepatit; Hepatology; HepB; IAA; ID; Infectious Disease; InfectiousDisease; Liver; MEIA; Microbiology; Ordinal; Pl; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Rh Blood Group System; Screen; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; SUDS; 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.

Common synonyms

HBV e Ag IA QlHepatitis B virus e Ag [Presence] in Serum or Plasma by ImmunoassayHBV e Ag SerPl Ql IAHepatitis B virus little e AgMICROHepatitis B virus (HBV) e antigen, BloodPrThr

Frequently asked questions

Code details

Code13954-3
SystemLOINC
Display nameHBV e Ag IA Ql
DescriptionHepatitis B virus little e Ag
Short nameHBV e Ag SerPl Ql IA
ComponentHepatitis B virus little e Ag
PropertyPrThr
TimingPt
System (specimen)Ser/Plas
ScaleOrd
MethodIA
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0k
Last changed2.73

Consumer names

Hepatitis B virus (HBV) e antigen, Blood

Part names

Hepatitis B virus little e AgPrThrPtSer/PlasOrdIAHepatitis B virus e AgPresence or ThresholdPoint in time (spot)Serum or PlasmaImmunoassay

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.

LOINC Code 13954-3 | HealthAssure