LOINCActiveObservation

LOINC Code 94437-1: HLA-DQA1 IgG FC Nom

94437-1 is a LOINC code used to identify HLA-DQA1 IgG FC Nom 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 HLA-DQA1 Ab.IgG. 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 HLA-DQA1 Ab.IgG. 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: Observation
  • Method: Flow cytometry

What it does not mean

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

Key facts

  • HLA-DQA1 IgG Ab [Identifier] in Serum or Plasma by Flow cytometry (FC)
  • HLA-DQA1 Ab.IgG
  • Some high specificity assays,such as the Luminex single bead system, detect epitopes at a detailed molecular allele-equivalent level. Therefore, many laboratories using this assay will report, along with the serological type, the molecular type, and also the mean fluorescence intensity (MFI) in a single answer. This term is intended to cover the existing reporting formats for HLA-DQA1 antibody specificity.
  • ABS; Aby; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; Dynamic; FC; Genetics; Heredity; Heritable; HLA ANTIGEN; Human Leukocyte Antigen; Identity or presence; Immune globulin G; Immunoglobulin G; Inherited; Nominal; Pl; Plasma; Plsm; Point in time; Random; 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

HLA-DQA1 IgG FC NomHLA-DQA1 IgG Ab [Identifier] in Serum or Plasma by Flow cytometry (FC)HLA-DQA1 IgG SerPl FCHLA-DQA1 Ab.IgGHLAHLA-DQA1 IgG antibody, BloodPrid

Frequently asked questions

Code details

Code94437-1
SystemLOINC
Display nameHLA-DQA1 IgG FC Nom
DescriptionHLA-DQA1 Ab.IgG
Short nameHLA-DQA1 IgG SerPl FC
ComponentHLA-DQA1 Ab.IgG
PropertyPrid
TimingPt
System (specimen)Ser/Plas
ScaleNom
MethodFlow cytometry
ClassHLA
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.68
Last changed2.68

Consumer names

HLA-DQA1 IgG antibody, Blood

Part names

HLA-DQA1 Ab.IgGPridPtSer/PlasNomFlow cytometryPresence or IdentityPoint in time (spot)Serum or PlasmaFlow cytometry (FC)

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 94437-1 | HealthAssure