LOINCActiveBoth

LOINC Code 23101-9: Equine influenza virus A1 Ab Ql (S)

23101-9 is a LOINC code used to identify Equine influenza virus A1 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 Equine influenza virus A1 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 Equine influenza virus A1 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

  • Equine influenza virus A1 Ab [Presence] in Serum
  • Equine influenza virus A1 Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; EIV; EIV A1; Equin; Equine influenza; FLUV; ID; Infectious Disease; InfectiousDisease; Influ; Microbiology; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Screen; 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

Equine influenza virus A1 Ab Ql (S)Equine influenza virus A1 Ab [Presence] in SerumEIV A1 Ab Ser QlEquine influenza virus A1 AbMICROEquine influenza virus A1 antibody, BloodPrThr

Frequently asked questions

Code details

Code23101-9
SystemLOINC
Display nameEquine influenza virus A1 Ab Ql (S)
DescriptionEquine influenza virus A1 Ab
Short nameEIV A1 Ab Ser Ql
ComponentEquine influenza virus A1 Ab
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0n
Last changed2.56

Consumer names

Equine influenza virus A1 antibody, Blood

Part names

Equine influenza virus A1 AbPrThrPtSerOrdPresence or ThresholdPoint 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 23101-9 | HealthAssure