ARUP's Laboratory Test Directory

0093149: Immunoglobulin A Subclasses (1&2)

Test Mnemonic: IGA SUB
Methodology: Nephelometry

Performed: Wed, Sat

Reported: 1-5 days

Specimen Required:  
Collect: One 4 mL SST or green (sodium or lithium heparin)

Transport: 2 mL serum, frozen. (Min: 0.45 mL) Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport: 0.45 mL serum or plasma, frozen.

Stability: After separation from cells: Ambient: 2 hours; Refrigerated: 8 hours; Frozen: 6 months;;

Reference Interval:
 
Test Number Components Reference Interval
0050340Immunoglobulin A, Serum  
 
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

CPT Code(s):
82784 IgA; 82787 x2 IgA subclasses, 86329 x2 IgA 1 & IgA 2