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 58440-9: Classical swine fever virus E2 Ab IA Qn (S)

Name: LOINC Code 58440-9: Classical swine fever virus E2 Ab IA Qn (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T08:59:39.274Z

58440-9 is a LOINC code used to identify Classical swine fever virus E2 Ab IA 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 Classical swine fever virus E2 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 Classical swine fever virus E2 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: ACTIVE
Order vs observation: Both
Method: IA

What it does not mean

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

Key facts

Classical swine fever virus E2 Ab [Units/volume] in Serum by Immunoassay
Classical swine fever virus E2 Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Classical swine fever; CSFV; CSFV E2; EIA; ELFA; ELISA; Enzyme immunoassay; Hog cholera; IAA; ID; Infectious Disease; InfectiousDisease; MEIA; Microbiology; Pestivirus; Pig; Point in time; Pork; QNT; Quan; Quant; Quantitative; Random; Serum; SR; SUDS; Vet; Veterinary

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

Classical swine fever virus E2 Ab IA Qn (S)Classical swine fever virus E2 Ab [Units/volume] in Serum by ImmunoassayCSFV E2 Ab Ser IA-aCncClassical swine fever virus E2 AbMICROClassical Swine Fever virus E2 antibody, BloodACnc

Frequently asked questions

Code details

Code58440-9

SystemLOINC

Display nameClassical swine fever virus E2 Ab IA Qn (S)

DescriptionClassical swine fever virus E2 Ab

Short nameCSFV E2 Ab Ser IA-aCnc

ComponentClassical swine fever virus E2 Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleQn

MethodIA

ClassMICRO

StatusACTIVE

Order/ObservationBoth

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released2.30

Last changed2.69

Consumer names

Classical Swine Fever virus E2 antibody, Blood

Part names

Classical swine fever virus E2 AbACncPtSerQnIAArbitrary ConcentrationPoint in time (spot)SerumImmunoassay

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.