LOINCActiveBoth

LOINC Code 23971-5: EBV early IgG (S) [Titer]

23971-5 is a LOINC code used to identify EBV early IgG (S) [Titer] 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 Epstein Barr virus early Ab.IgG. 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 Epstein Barr virus early Ab.IgG. 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

  • Epstein Barr virus early IgG Ab [Titer] in Serum
  • Epstein Barr virus early Ab.IgG
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dilution factor; Dilution Factor (Titer); EA; EBV; EBV EA; Epstn; HHV-4; human herpesvirus 4; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Mono; Mononucleosis; Point in time; Random; Serum; SmQn; SR; Titer; Titered; Titre; Ttr

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

EBV early IgG (S) [Titer]Epstein Barr virus early IgG Ab [Titer] in SerumEBV EA IgG Titr SerEpstein Barr virus early Ab.IgGMICROEpstein Barr virus (EBV) Early IgG antibody, BloodTitr

Frequently asked questions

Code details

Code23971-5
SystemLOINC
Display nameEBV early IgG (S) [Titer]
DescriptionEpstein Barr virus early Ab.IgG
Short nameEBV EA IgG Titr Ser
ComponentEpstein Barr virus early Ab.IgG
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0o
Last changed2.75

Consumer names

Epstein Barr virus (EBV) Early IgG antibody, Blood

Part names

Epstein Barr virus early Ab.IgGTitrPtSerSemiQnEpstein Barr virus early IgGTiterPoint 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.

LOINC Code 23971-5 | HealthAssure