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IGA Total
Test CodeIGAT
Alias/See Also
IGA, IGA Total, Immunoglobulin IgA
Preferred Specimen
SST (Gold) Serum
Minimum Volume
0.5
Other Acceptable Specimens
Lithium Heparin (Light Green)
Specimen Stability
Specimens are stable up to 3 days when stored at 2°C to 8°C or for longer when stored at ≤ -20°C.
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Lipemic specimens
Setup Schedule
24x7
Report Available
24 hours
Reference Range
66-433 mg/dL
Clinical Significance
Immunoglobulin A accounts for about 10% to 15% of serum immunoglobulins and has a half-life of 6 days. In its monomeric form, its structure is similar to that of IgG, but 10% to 15% of IgA in serum is dimeric, particularly IgA2, which is more resistant to destruction by pathogenic bacteria than IgA. Immunoglobulin A is synthesized mainly by plasma cells in the mucous membranes of the gut and bronchi and in the ductules of lactating breast. The secretory component assists in the transport of secretory IgA across mucosal epithelium and into the secretions.
Performing Laboratory
CRMC Laboratory
