Immunoglobulin A Subclasses (1&2)
0093149
 
Ordering Recommendation
Mnemonic
IGA SUB
Methodology
Quantitative Nephelometry
Performed
Wed, Sat
Reported
1-5 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
 
Collect
Serum separator tube or green (sodium or lithium heparin).  
Specimen Preparation
Transfer 2 mL serum to an ARUP Standard Transport Tube. (Min: 0.45 mL)  
Storage/Transport Temperature
Frozen.  
Unacceptable Conditions
 
Remarks
 
Stability
After separation from cells: Ambient: 2 hours; Refrigerated: 8 days; Frozen: 6 months  
Reference Interval
Test Number Components Reference Interval
0050340Immunoglobulin A
0-​30 days: 1-​7 mg/dL
1 month: 1-​53 mg/dL
2 months: 3-​47 mg/dL
3 months: 5-​46 mg/dL
4 months: 4-​72 mg/dL
5 months: 8-​83 mg/dL
6 months: 8-​67 mg/dL
7-​8 months: 11-​89 mg/dL
9-​11 months: 16-​83 mg/dL
1 year: 14-​105 mg/dL
2 years: 14-​122 mg/dL
3 years: 22-​157 mg/dL
4 years: 25-​152 mg/dL
5-​7 years: 33-​200 mg/dL
8-​9 years: 45-​234 mg/dL
10 years and older: 68-​378 mg/dL
Immunoglobulin A Subclass 1 0-​11 months: 1-​115 mg/dL
1 year: 3-​120 mg/dL
2 years: 7-​132 mg/dL
3 years: 11-​143 mg/dL
4-​7 years: 23-​175 mg/dL
8-​11 years: 33-​204 mg/dL
12-​18 years: 47-​249 mg/dL
Adult: 60-​294 mg/dL
Immunoglobulin A Subclass 2 0-​11 months: 0-​19 mg/dL
1 year: 0-​23 mg/dL
2 years: 1-​23 mg/dL
3 years: 1-​25 mg/dL
4-​7 years: 2-​33 mg/dL
8-​11 years: 2-​37 mg/dL
12-​18 years: 4-​50 mg/dL
Adult: 6-​61 mg/dL
Interpretive Data
Note
CPT Code(s)
82784; 82787 x2
Components
Component Test Code*Component Chart Name
0050340Immunoglobulin A
0093150Immunoglobulin A Subclass 1
0093151Immunoglobulin A Subclass 2
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, contact interface support at interface.support@aruplab.com.
Cross References
  • IgA Subclasses with Total IgA