LOINCActiveBoth

LOINC Code 42977-9: Porcine influenza virus A Ab (S) [Titer]

42977-9 is a LOINC code used to identify Porcine influenza virus A Ab (S) [Titer] 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 Porcine influenza virus A 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 Porcine influenza virus A 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

  • Porcine influenza virus A Ab [Titer] in Serum
  • Porcine influenza virus A Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Avian influenza; Bird flu; Dilution factor; Dilution Factor (Titer); FLUA; FLUAV; FLUV; Fowl plague; ID; Infectious Disease; InfectiousDisease; Influ; Influenza A; Influenza A virus; Microbiology; Point in time; Porcine FLUAV; Pork; Random; Serum; SmQn; SR; Swine; Titer; Titered; Titre; Ttr; 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

Porcine influenza virus A Ab (S) [Titer]Porcine influenza virus A Ab [Titer] in SerumPorcine FLUAV Ab Titr SerPorcine influenza virus A AbMICROPorcine Influenza virus A antibody, BloodTitr

Frequently asked questions

Code details

Code42977-9
SystemLOINC
Display namePorcine influenza virus A Ab (S) [Titer]
DescriptionPorcine influenza virus A Ab
Short namePorcine FLUAV Ab Titr Ser
ComponentPorcine influenza virus A Ab
PropertyTitr
TimingPt
System (specimen)Ser
ScaleSemiQn
ClassMICRO
Example unitstiter
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.16
Last changed2.75

Consumer names

Porcine Influenza virus A antibody, Blood

Part names

Porcine influenza virus A AbTitrPtSerSemiQnTiterPoint 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.