Sign in →

Test Code 76480023 Beta-2 Glycoprotein Antibody, IgA

Performing Laboratory

Barnes-Jewish Hospital Laboratory


Multiplex Flow Immunoassay

Literature Reference:

Package Insert: BioPlex 2200 APLS IgA kit. BioRad Laboratories, Inc. 10/2013

Specimen Requirements

Specimen Type: Serum

Container/Tube: Plain Red Top

Specimen Volume: Full tube

Day(s) Test Set UP

Monday through Sunday

Cut-off time: 1000

Turnaround Time:

STAT: not available

Routine: results will be available the day of testing

Reference Values

Beta-2 Glycoprotein

IgA Antibody

Units Interpretation
  < 20 GPL Units/mL Negative
  > 20 GPL Units/mL Positive


Interpretive data for IgA: The International Congress on Antiphospholipid Antibodies does not recommend testing for IgA Beta-2 glycoprotein 1 (Beta-2 GP1) since this isotype rarely occurs in the absence of IgG or IgM B2glycoprotein, and the association of an isolated IgA Beta-2 GP1 with APA clinical signs and symptoms is weak. The following results were obtained with the BioRad BioPlex 2200 System. Beta-2 GP1 IgA values obtained with different manufacturers' assay methods may not be used interchangeably.


Reference Interval Literature Reference:

Miyakis S, Lockshin MD, Atsumi T, Branch DW, Brey RS et al. International consensus statement on and update of the classification criteria for definite antiphospholipid syndrome. J Thromb Heamost 2006; 4:295-306


Package Insert: BioPlex 2200 APLS IgA kit. BioRad Laboratories, Inc. 10/2013

Test Classification and CPT Coding


Additional Information

For BJH Laboratory Use Only


Analyte Stability:

See Analyte Stability Chart


Laboratory Processing Instructions:

Test performed in BJH Core Lab. Processed by automated line and aliquot stored refrigerated for batch analysis. Completed specimens are stored refrigerated for 5 days.

LOINC Code Information

Name LOINC Code
Beta-2 Glycoprotein Antibody, IgA 44447-1


Specimen Transport Temperature