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Immunoglobulin A
Test CodeIGA
Alias/See Also
IGA
Chemistry
Chemistry
Preferred Specimen
Gold Top Tube
Minimum Volume
2 mL
Transport Temperature
Refrigerate
Specimen Stability
Room temperature (20 to 25°C): 7 days
Refrigerated (2-8°C): 7 days
Frozen (-20°C or colder): 6 months off gel
Refrigerated (2-8°C): 7 days
Frozen (-20°C or colder): 6 months off gel
Methodology
Turbidimetric/Immunoturbidimetric
Setup Schedule
M-F
Report Available
TAT 1 - 2 days
Reference Range
70 - 400 mg/dL
Clinical Significance
Increased IgA is associated with monoclonal IgA myeloma, respiratory and gastrointestinal infections, and malabsorption; decreased IgA is found in selective IgA deficiency and in ataxia telangiectasia.
Performing Laboratory
Test performed at West Roxbury Chemistry Lab
Contact: Jonathan Dryjowicz-Burek 857-203-5973
Last Updated: November 21, 2025
