LOINCActiveBoth

LOINC Code 44583-3: IgA Ab HAI Ql

44583-3 is a LOINC code used to identify IgA Ab HAI Ql 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 IgA Ab. It is commonly used with the system or sample type Ser/Plas.

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 IgA Ab. It is commonly used with the system or sample type Ser/Plas.

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

  • IgA Ab [Presence] in Serum or Plasma by Hemagglutination inhibition
  • IgA Ab
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Chemistry; HEMAGGLUTINATION INHIBITION; HI; Immune globulin A; Immunoglobulin A; Ordinal; Pl; Plasma; Plsm; Point in time; PR; QL; Qual; Qualitative; Random; Screen; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

IgA Ab HAI QlIgA Ab [Presence] in Serum or Plasma by Hemagglutination inhibitionIgA Ab SerPl Ql HAIIgA AbCHEMIgA antibody, BloodPrThr

Frequently asked questions

Code details

Code44583-3
SystemLOINC
Display nameIgA Ab HAI Ql
DescriptionIgA Ab
Short nameIgA Ab SerPl Ql HAI
ComponentIgA Ab
PropertyPrThr
TimingPt
System (specimen)Ser/Plas
ScaleOrd
MethodHAI
ClassCHEM
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.17
Last changed2.56

Consumer names

IgA antibody, Blood

Part names

IgA AbPrThrPtSer/PlasOrdHAIPresence or ThresholdPoint in time (spot)Serum or PlasmaHemagglutination 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.

LOINC Code 44583-3 | HealthAssure