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.

LOINC

LOINC Code 6534-2: Rabies virus Ag IF Qn (Specimen)

Name: LOINC Code 6534-2: Rabies virus Ag IF Qn (Specimen)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:44.551Z

6534-2 is a LOINC code used to identify Rabies virus Ag IF Qn (Specimen) 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 Rabies virus Ag. It is commonly used with the system or sample type XXX.

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 Rabies virus Ag. It is commonly used with the system or sample type XXX.

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: DEPRECATED
Method: IF

What it does not mean

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

Key facts

Deprecated Rabies virus Ag [Units/volume] in Unspecified specimen by Immunofluorescence
Rabies virus Ag
ACIF; Anticomplement Immunofluorescence; Antigen; Antigens; Arbitrary concentration; DFA; FA; Fluorescent antibody; Fluoresent; ID; IFA; Immune fluorescence; Immunoflour; Immunofluor; Immunofluorescence; Infectious Disease; InfectiousDisease; Lyssavirus; Microbiology; Misc; Miscellaneous; Other; Point in time; QNT; Quan; Quant; Quantitative; Rabies; RABV; Random; Spec; Time Resolved Fluorescence; To be specified in another part of the message; TRF; Unspecified

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

Rabies virus Ag IF Qn (Specimen)Deprecated Rabies virus Ag [Units/volume] in Unspecified specimen by ImmunofluorescenceDeprecated RABV Ag XXX IF-aCncRabies virus AgMICRORabies virus antigen, SpecimenACnc

Frequently asked questions

Code details

Code6534-2

SystemLOINC

Display nameRabies virus Ag IF Qn (Specimen)

DescriptionRabies virus Ag

Short nameDeprecated RABV Ag XXX IF-aCnc

ComponentRabies virus Ag

PropertyACnc

TimingPt

System (specimen)XXX

ScaleQn

MethodIF

ClassMICRO

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0g

Last changed2.69

Consumer names

Rabies virus antigen, Specimen

Part names

Rabies virus AgACncPtXXXQnIFArbitrary ConcentrationPoint in time (spot)Immunofluorescence (IF)

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.