LOINCActiveBoth

LOINC Code 31724-8: Avian leukosis virus Ag Qn (S)

31724-8 is a LOINC code used to identify Avian leukosis virus Ag 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 Avian leukosis virus Ag. It is commonly used with the system or sample type Ser.

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 Avian leukosis virus Ag. 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

What it does not mean

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

Key facts

  • Avian leukosis virus Ag [Units/volume] in Serum
  • Avian leukosis virus Ag
  • ALV; Antigen; Antigens; Arbitrary concentration; Bird; Fowl; 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

Avian leukosis virus Ag Qn (S)Avian leukosis virus Ag [Units/volume] in SerumALV Ag Ser-aCncAvian leukosis virus AgMICROAvian Leukosis virus antigen, BloodACnc

Frequently asked questions

Code details

Code31724-8
SystemLOINC
Display nameAvian leukosis virus Ag Qn (S)
DescriptionAvian leukosis virus Ag
Short nameALV Ag Ser-aCnc
ComponentAvian leukosis virus Ag
PropertyACnc
TimingPt
System (specimen)Ser
ScaleQn
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.07
Last changed2.69

Consumer names

Avian Leukosis virus antigen, Blood

Part names

Avian leukosis virus AgACncPtSerQnArbitrary 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.

LOINC Code 31724-8 | HealthAssure