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Immunoglobulins (IgG, IgA, IgM), Quantitative

Please see LabAlert - Protein Electrophoresis & Immunofixation Reporting

Mnemonic

IG GAM

Synonym

IGG - IGA - IGM

Includes

Immunoglobulin G, Immunoglobulin A, Immunoglobulin M

Specimen Collection Requirements

Collect

Serum, one 5.0 mL gold (SST) or 7.0 mL red top tube

Handling

Allow serum to clot completely at room temperature (minimum for SST - 30 minutes and red top tubes - 60 minutes). Centrifuge and separate serum from cells within one hour of collection

Preferred Volume

1.5 mL

Minimum Volume

1.0 mL (2.5 mL minimum whole blood draw)

Transport

Refrigerated (2-8°C)

Rejection Criteria

Grossly hemolyzed or grossly lipemic specimens

Stability

AFTER SEPARATION FROM CELLS: Room Temperature (18-26°C): 8 hours; Refrigerated (2-8°C): 7 days; Frozen (≤ -20°C): 3 months if frozen within 24 hours of collection (avoid repeated freeze/thaw cycles)

Testing Information

Performed

Monday - Friday

Reported

24-72 hours

Method

Nephelometry

Reference Values

Reference Values

Age adjusted ranges available.  Refer to specific tests in test table for more information.

CPT Codes

IGG: 82784, IGA: 82784, IGM: 82784

Last Updated: Wednesday, January 20, 2021 01:49:17 AM


Client Services: 503-413-1234