Feedback
Immunoglobulin A Subclasses (1 and 2)
0093149
Ordering Recommendation

Aid in diagnosis of immunodeficiencies. Secondary test in suspected immunoglobulin deficiency. Do not order before IgG, IgA, and IgM measurements are performed. 

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.
Submit With Order
ARUP Consult®
Disease Topics
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 AEffective February 16, 2016
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: 68-408 mg/dL

 Immunoglobulin A Subclass 10-11 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 20-11 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
Hotline History
N/A
Components
Component Test Code*Component Chart NameLOINC
0050340Immunoglobulin A2458-8
0093150Immunoglobulin A Subclass 16886-6
0093151Immunoglobulin A Subclass 26939-3
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Aliases
  • IgA
  • IgA 1 and 2
  • IgA Subclasses with T otal IgA (Immunoglobulin A Subclasses (1&2))
  • Immunoglobulin A