Immunoglobulin A Subclasses 1 & 2




Test Mnemonic

IGA12

CPT Codes

  • 82784 - QTY (1)
  • 82787 - QTY (2)

Aliases

  • IgA Subclassses with Total IgA
  • Immunoglobulin A Subclasses (1 & 2)

Includes

  • Immunoglobulin A
  • Immunoglobulin A Subclass 1
  • Immunoglobulin A Subclass 2

Performing Laboratory

ARUP


Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
2 mLSerumSST (Gold) RefrigeratedCentrifuge aliquot and refrigerate serum immediately.

Minimum Specimen Requirements

Volume Type Container Collect Temperature Transport Temperature Special Instructions
0.7 mL     

Stability

Environmental Condition Description
RefrigeratedAfter separation from cells: 14 days
FrozenAfter separation from cells: 6 months
AmbientAfter separation from cells: Unacceptable

Days Performed

Wed, Sat

Turnaround Time

2 - 6 days

Methodology

Name Description
Quantitative Immunoturbidimetric 

Reference Range

IgA, Subclass 1
Sex Age From Age To Type Range Range Unit
       0 - 2 years: 3 - 145 mg/dL 
       3 - 4 years: 22 - 278 mg/dL 
       5 - 9 years: 43 - 337 mg/dL 
       10 - 14 years: 37 - 430 mg/dL 
       15 - 18 years: 76 - 394 mg/dL 
       > / = 19 years: 60 - 294 mg/dL 
IgA, Subclass 2
Sex Age From Age To Type Range Range Unit
       0 - 2 years: 1 - 15 mg/dL 
       3 - 4 years: 3 - 44 mg/dL 
       5 - 9 years: 7 - 56 mg/dL 
       10 - 14 years: 1 - 109 mg/dL 
       15 - 18 years: 14 - 54 mg/dL 
       > / = 19 years: 6 - 61 mg/dL 
Immunoglobulin A
Sex Age From Age To Type Range Range Unit
       0 - 2 years: 2 - 126 mg/dL 
       3 - 4 years: 14 - 212 mg/dL 
       5 - 9 years: 52 - 226 mg/dL 
       10 - 14 years: 42 - 345 mg/dL 
       15 - 18 years: 60 - 349 mg/dL 
       > / = 19 years: 68-408 mg/dL 

Special Info

Grossly hemolyzed or lipemic specimens will be rejected. This test is New York DOH approved.

Clinical Info

Secondary test in suspected immunoglobulin deficiency.