Immunoglobulin A, Subclasses 1 and 2


Sunquest Code:ASUB12  
Epic Code:LAB6757Epic Name:Immunoglobulin A Subclasses 1 and 2
Synonyms:IgA Subclasses
Methodology:Nephelometry
Turnaround Time:Specimens are sent to reference laboratory Mon-Sat; results are reported within 1-5 days.


Collection Instructions

Specimen:Blood
Optimal Volume:4 mL
Minimum\Peds Volume:1.6 mL
Container:Red or gold (gel)
Causes for Rejection:Grossly hemolyzed or lipemic specimens. Room temperature specimens.


Processing and Shipping

Specimen Processing:Centrifuge and aliquot 2 mL; 0.7 mL minimum. Store refrigerated.
Shipping Instructions:Ship refrigerated.
Stability:After separation from cells: 14 days refrigerated; 6 months frozen.
Test Performed at or Referral Lab Lab Sendouts  (ARUP)
Referral Lab number:93149


Interpretive

Reference Range:
Immunoglobulin A 0-2 yr: 2-126 mg/dL
3-4 yr: 14-212 mg/dL
5-9 yr: 52-226 mg/dL
10-14 yr: 42-345 mg/dL
15-18 yr: 60-349 mgdL
19 yr & older: 66-408 mg/dL
Immunoglobulin A Subclass 1 0-2 yr: 3-145 mg/dL
3-4 yr: 22-278 mg/dL
5-9 yr: 43-337 mg/dL
10-14 yr: 37-430 mg/dL
15-18 yr: 76-394 mgdL
19 yr & older: 60-294 mg/dL
Immunoglobulin A Subclass 2 0-2 yr: 1-15 mg/dL
3-4 yr: 3-44 mg/dL
5-9 yr: 7-56 mg/dL
10-14 yr: 1-109 mg/dL
15-18 yr: 14-54 mgdL
19 yr & older: 6-61 mg/dL
   
Use:Aids in diagnosis of immunodeficiencies. Secondary test in suspected immunoglobulin deficiency. Do not order before IgG; IgA and IgM measurements are performed.


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