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 23390-8: Rabies virus Ag Immune stain Ql (Brain)

Name: LOINC Code 23390-8: Rabies virus Ag Immune stain Ql (Brain)
Creator: HealthAssure Clinical Team
Published: 2026-05-25T17:13:11.347Z

23390-8 is a LOINC code used to identify Rabies virus Ag Immune stain Ql (Brain) 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 Brain.

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

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: Immune stain

What it does not mean

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

Key facts

Rabies virus Ag [Presence] in Brain by Immune stain
Rabies virus Ag
Antigen; Antigens; Cerebral; Cerebrum; Head; ID; IHC; Imm; Immunohistochemical stain; Immunostain; ImStn; Imun; Imune; Infectious Disease; InfectiousDisease; Intracranial; Lyssavirus; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Rabies; RABV; Random; Screen; St; Stains; Stn

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 Rabies virus Ag Immune stain Ql (Brain) (23390-8)

Related observations and tests

SNOMED_CT 705114005high

LOINC Code System

Source: LOINC-SNOMED cooperation package

Common synonyms

Rabies virus Ag Immune stain Ql (Brain)Rabies virus Ag [Presence] in Brain by Immune stainRABV Ag Brain Ql ImStnRabies virus AgMICRORabies virus antigen, BrainPrThr

Frequently asked questions

Code details

Code23390-8

SystemLOINC

Display nameRabies virus Ag Immune stain Ql (Brain)

DescriptionRabies virus Ag

Short nameRABV Ag Brain Ql ImStn

ComponentRabies virus Ag

PropertyPrThr

TimingPt

System (specimen)Brain

ScaleOrd

MethodImmune stain

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0n

Last changed2.56

Consumer names

Rabies virus antigen, Brain

Part names

Rabies virus AgPrThrPtBrainOrdImmune stainPresence or ThresholdPoint in time (spot)

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.