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 22604-3: VZV IgG spec 2 Qn (S)

Name: LOINC Code 22604-3: VZV IgG spec 2 Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:30.110Z

22604-3 is a LOINC code used to identify VZV IgG spec 2 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 Varicella zoster virus Ab.IgG^2nd specimen. 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 Varicella zoster virus Ab.IgG^2nd specimen. 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

Varicella zoster virus IgG Ab [Units/volume] in Serum --2nd specimen
Varicella zoster virus Ab.IgG^2nd specimen
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Chicken pox; Chicken pox virus; Chickenpox; Convalescent; Herpes zoster; HHV-3; Human herpesvirus 3; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Point in time; Post immunization; QNT; Quan; Quant; Quantitative; Random; Second; Serum; Shingles; sp2; Spec; SR; VZ; VZV; Zoster

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

VZV IgG spec 2 Qn (S)Varicella zoster virus IgG Ab [Units/volume] in Serum --2nd specimenVZV IgG sp2 Ser-aCncVaricella zoster virus Ab.IgG^2nd specimenMICROVaricella zoster virus (VZV; Chickenpox) IgG antibody specimen 2, BloodACnc

Frequently asked questions

Code details

Code22604-3

SystemLOINC

Display nameVZV IgG spec 2 Qn (S)

DescriptionVaricella zoster virus Ab.IgG^2nd specimen

Short nameVZV IgG sp2 Ser-aCnc

ComponentVaricella zoster virus Ab.IgG^2nd specimen

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0n

Last changed2.69

Consumer names

Varicella zoster virus (VZV; Chickenpox) IgG antibody specimen 2, Blood

Part names

Varicella zoster virus Ab.IgG^2nd specimenACncPtSerQnArbitrary ConcentrationPoint 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.