LOINC Code 23104-3: Equine influenza virus A2 Ag HAI (Specimen) [Titer]

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 A2 Ag. It is commonly used with the system or sample type XXX.

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: HAI

What it does not mean

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

Key facts

• Equine influenza virus A2 Ag [Titer] in Specimen by Hemagglutination inhibition
• Equine influenza virus A2 Ag
• Antigen; Antigens; Dilution factor; Dilution Factor (Titer); EIV; EIV A2; Equin; Equine influenza; FLUV; HEMAGGLUTINATION INHIBITION; HI; ID; Infectious Disease; InfectiousDisease; Influ; Kentucky disease; Microbiology; Misc; Miscellaneous; Other; Point in time; Random; SmQn; Spec; Titer; Titered; Titre; To be specified in another part of the message; Ttr; Unspecified; 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

Frequently asked questions