LOINCActiveBoth

LOINC Code 23438-5: Swine influenza virus Ab HAI Ql (S)

23438-5 is a LOINC code used to identify Swine influenza virus Ab HAI 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 Swine influenza virus 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 Swine influenza 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
  • Method: HAI

What it does not mean

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

Key facts

  • Swine influenza virus Ab [Presence] in Serum by Hemagglutination inhibition
  • Swine influenza virus Ab
  • United Kingdom - Porcine
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; FLUV; HEMAGGLUTINATION INHIBITION; HI; ID; Infectious Disease; InfectiousDisease; Influ; Microbiology; Ordinal; Pig; Point in time; Pork; PR; QL; Qual; Qualitative; Random; Screen; Serum; SIV; SR; Swine influenza

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

Swine influenza virus Ab HAI Ql (S)Swine influenza virus Ab [Presence] in Serum by Hemagglutination inhibitionSIV Ab Ser Ql HAISwine influenza virus AbMICROSwine Influenza virus antibody, BloodPrThr

Frequently asked questions

Code details

Code23438-5
SystemLOINC
Display nameSwine influenza virus Ab HAI Ql (S)
DescriptionSwine influenza virus Ab
Short nameSIV Ab Ser Ql HAI
ComponentSwine influenza virus Ab
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
MethodHAI
ClassMICRO
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Swine Influenza virus antibody, Blood

Part names

Swine influenza virus AbPrThrPtSerOrdHAIPresence or ThresholdPoint in time (spot)SerumHemagglutination inhibition

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.