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 17764-2: VZV IgG Qn (CSF)

Name: LOINC Code 17764-2: VZV IgG Qn (CSF)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

17764-2 is a LOINC code used to identify VZV IgG Qn (CSF) 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. It is commonly used with the system or sample type CSF.

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 Varicella zoster virus Ab.IgG. It is commonly used with the system or sample type CSF.

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 Cerebral spinal fluid
Varicella zoster virus Ab.IgG
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Cerebral spinal fluid; Cerebrospinal Fl; Chicken pox; Chicken pox virus; Chickenpox; Herpes zoster; HHV-3; Human herpesvirus 3; ID; Immune globulin G; Immunoglobulin G; Infectious Disease; InfectiousDisease; Microbiology; Neuro; Neurology; Point in time; QNT; Quan; Quant; Quantitative; Random; Shingles; Spinal Fl; Spinal Fld; Spinal Flu; Spinal Fluid; 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.

Related SNOMED CT concepts

705114005SNOMED CT mapping for VZV IgG Qn (CSF) (17764-2)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

VZV IgG Qn (CSF)Varicella zoster virus IgG Ab [Units/volume] in Cerebral spinal fluidVZV IgG CSF-aCncVaricella zoster virus Ab.IgGMICROVaricella zoster virus (VZV; Chickenpox) IgG antibody, Spinal fluidACnc

Frequently asked questions

Code details

Code17764-2

SystemLOINC

Display nameVZV IgG Qn (CSF)

DescriptionVaricella zoster virus Ab.IgG

Short nameVZV IgG CSF-aCnc

ComponentVaricella zoster virus Ab.IgG

PropertyACnc

TimingPt

System (specimen)CSF

ScaleQn

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0l

Last changed2.73

Consumer names

Varicella zoster virus (VZV; Chickenpox) IgG antibody, Spinal fluid

Part names

Varicella zoster virus Ab.IgGACncPtCSFQnVaricella zoster virus IgGArbitrary ConcentrationPoint in time (spot)Cerebral spinal fluid

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.