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Lab Dept:
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Serology
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Test Name:
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INFLUENZA VIRUS A IGG & IGM ANTIBODIES
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General Information
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Lab Order Codes:
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IFLA
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Synonyms:
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N/A
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CPT Codes:
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86710 x2 – Antibody; influenza virus
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Test Includes:
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Separate determinations of Influenza Virus A IgG and IgM reported as titers.
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Logistics
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Test Indications:
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Determination of recent infection when isolation of the organism by culture is unsuccessful. Incidence of influenza is seasonal in the United States and usually occurs only from November to March.
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Lab Testing Sections:
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Serology - Sendouts
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Referred to:
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Mayo Medical Laboratories (Test# SFLA)
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Phone Numbers:
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MIN Lab: 612-813-6280
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STP Lab: 651-220-6550
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Test Availability:
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Daily, 24 hours
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Turnaround Time:
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1 – 3 days, testing set up Monday - Friday
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Special Instructions:
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N/A
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Specimen
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Specimen Type:
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Blood
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Container:
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Red top tube
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Draw Volume:
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1 mL (Minimum: 0.45 mL) blood
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Processed Volume:
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0.25 mL (Minimum: 0.15 mL) serum
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Collection:
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Routine venipuncture
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Special Processing:
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Lab Staff: Centrifuge specimen, remove serum aliquot and place in a round bottom, screw-capped plastic vial. Store and ship refrigerated. Forward promptly.
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Patient Preparation:
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None
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Sample Rejection:
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Specimens other than serum; mislabeled or unlabeled specimens; warm specimens; gross hemolysis; gross lipemia
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Interpretive
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Reference Range:
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IgG:<1:10
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IgM:<1:10
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The presence of IgM class antibodies or a fourfold or greater rise in paired sera IgG titers indicates recent infection. The presence of IgG class antibody generally indicates past exposure.
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Critical Values:
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N/A
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Limitations:
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Influenza virus infections occur exclusively from November through March.
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Methodology:
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Immunofluorescence
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References:
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Mayo Medical Laboratories November 2012
Phone: 1-800-533-1710
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