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 23331-2: Ovine progressive pneumonia virus Ab Ql (S)

Name: LOINC Code 23331-2: Ovine progressive pneumonia virus Ab Ql (S)
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:30.731Z

23331-2 is a LOINC code used to identify Ovine progressive pneumonia virus Ab Ql (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 Ovine progressive pneumonia 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 Ovine progressive pneumonia 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 Ovine progressive pneumonia virus Ab [Presence] in Serum
Ovine progressive pneumonia virus Ab
ABS; Aby; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; ID; Infectious Disease; InfectiousDisease; Lentivirus; Maedi Visna; Microbiology; OPPV; Ordinal; Ovine progressive pneumonia; Point in time; QL; Qual; Qualitative; Random; Screen; 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

Ovine progressive pneumonia virus Ab Ql (S)Deprecated Ovine progressive pneumonia virus Ab [Presence] in SerumDeprecated OPPV Ab Ser QlOvine progressive pneumonia virus AbMICROOvine Progressive Pneumonia virus antibody, BloodACnc

Frequently asked questions

Code details

Code23331-2

SystemLOINC

Display nameOvine progressive pneumonia virus Ab Ql (S)

DescriptionOvine progressive pneumonia virus Ab

Short nameDeprecated OPPV Ab Ser Ql

ComponentOvine progressive pneumonia virus Ab

PropertyACnc

TimingPt

System (specimen)Ser

ScaleOrd

ClassMICRO

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0n

Last changed2.36

Consumer names

Ovine Progressive Pneumonia virus antibody, Blood

Part names

Ovine progressive pneumonia virus AbACncPtSerOrdArbitrary 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.