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 31349-4: Eastern equine encephalomyelitis virus Ab Qn (S)

Name: LOINC Code 31349-4: Eastern equine encephalomyelitis virus Ab Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:17.664Z

31349-4 is a LOINC code used to identify Eastern equine encephalomyelitis virus Ab 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 Eastern equine encephalomyelitis virus Ab. 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 Eastern equine encephalomyelitis virus Ab. 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: DEPRECATED

What it does not mean

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

Key facts

Deprecated Eastern equine encephalitis virus Ab [Units/volume] in Serum
Eastern equine encephalomyelitis virus Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Equin; ID; Infectious Disease; InfectiousDisease; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR

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

Eastern equine encephalomyelitis virus Ab Qn (S)Deprecated Eastern equine encephalitis virus Ab [Units/volume] in SerumDeprecated EEEV Ab Ser-aCncEastern equine encephalomyelitis virus AbMICROEastern equine encephalomyelitis virus antibody, BloodACnc

Frequently asked questions

Code details

Code31349-4

SystemLOINC

Display nameEastern equine encephalomyelitis virus Ab Qn (S)

DescriptionEastern equine encephalomyelitis virus Ab

Short nameDeprecated EEEV Ab Ser-aCnc

ComponentEastern equine encephalomyelitis virus Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

ClassMICRO

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.07

Last changed2.69

Consumer names

Eastern equine encephalomyelitis virus antibody, Blood

Part names

Eastern equine encephalomyelitis virus AbACncPtSerQnArbitrary 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.