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Anti IgA Antibodies, IgG Class

Immunoglobulin A Antibodies, Anti-IgA Antibodies

Test Codes

Order as Miscellaneous Send Out test. EPIC: LAB6224, Beaker: XMISC, Mayo: FIGA

Department

Send Outs

Specimen Collection Criteria

Collect (preferred specimen): One plain Red-top tube.

Also acceptable: One Gold-top SST tube.

Physician Office/Draw Specimen Preparation

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Preparation for Courier Transport

Transport: 1.0 mL serum, refrigerated (2-8°C or 36-46°F). (Minimum: 0.5 mL)

Rejection Criteria

Specimens not collected and processed as indicated.

In-Lab Processing

Let specimen clot 30-60 minutes then centrifuge to separate serum from cells. Transfer serum to a plastic transport tube and refrigerate (2-8°C or 36-46°F).

Transport: 1.0 mL serum, refrigerated (2-8°C or 36-46°F). (Minimum: 0.5 mL) 

Storage

Specimen Stability for Testing:

Room Temperature (20-26°C or 68-78.8°F): 7 days
Refrigerated (2-8°C or 36-46°F): 7 days
Frozen (-20°C/-4°F or below): 30 days

Specimen Storage in Department Prior to Disposal:

Specimen retention time is determined by the policy of the reference laboratory. Contact the Send Outs Laboratory with any questions.

Laboratory

Sent to Mayo Clinic Laboratories, Rochester, MN, forwarded to Viracor Eurofins Laboratories, Lee's Summit, MO.

Performed

Thursday.
Results available in 7–14 days.

Reference Range

Less than 99 U/mL.

Test Methodology

Enzyme-Linked Immunosorbent Assay (ELISA).

Interpretation

Positive results occur in IgA deficient patients who have experienced an anaphylactic reaction associated with transfusion of plasma-containing blood or blood components.

Clinical Utility

Useful for the evaluation of patients with a history of severe transfusion reaction with signs of anaphylaxis and the identification of patients who require IgA-free blood product.

CPT Codes

83520

Contacts

Last Updated

9/3/2024