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LOINC Code 31240-5: Avian infectious laryngotracheitis virus Ab Qn (S)

31240-5 is a LOINC code used to identify Avian infectious laryngotracheitis 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 Avian infectious laryngotracheitis virus Ab. 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 infectious laryngotracheitis 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: ACTIVE
  • Order vs observation: Both

What it does not mean

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

Key facts

  • Avian infectious laryngotracheitis virus Ab [Units/volume] in Serum
  • Avian infectious laryngotracheitis virus Ab
  • ABS; Aby; Alpha-herpesvirus; Antby; Anti; Antibodies; Antibody; Arbitrary concentration; Autoantibodies; Autoantibody; Avian infectious laryngotracheitis; Bird; Fowl; ID; ILT; Infectious Disease; InfectiousDisease; Microbiology; Point in time; QNT; Quan; Quant; Quantitative; Random; Serum; SR; 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

Avian infectious laryngotracheitis virus Ab Qn (S)Avian infectious laryngotracheitis virus Ab [Units/volume] in SerumILT Ab Ser-aCncAvian infectious laryngotracheitis virus AbMICROAvian Infectious Laryngotracheitis virus antibody, BloodACnc

Frequently asked questions

Code details

Code31240-5
SystemLOINC
Display nameAvian infectious laryngotracheitis virus Ab Qn (S)
DescriptionAvian infectious laryngotracheitis virus Ab
Short nameILT Ab Ser-aCnc
ComponentAvian infectious laryngotracheitis virus Ab
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 Infectious Laryngotracheitis virus antibody, Blood

Part names

Avian infectious laryngotracheitis 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.