Do not use to diagnose acute influenza infections. Serological testing for influenza should be used for research and public health investigations only.
Semi-Quantitative Enzyme-Linked Immunosorbent Assay
Mon, Wed, Fri
Serum separator tube.
Separate serum from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Standard Transport Tube. (Min: 0.05 mL) Parallel testing is preferred and convalescent specimens must be received within 30 days from receipt of the acute specimens. Mark specimens plainly as "acute" or "convalescent."
Refrigerated. Also acceptable: Room temperature or frozen.
Plasma. Bacterially contaminated, heat-inactivated, hemolyzed, icteric, lipemic, turbid specimens.
After separation from cells: Ambient: 48 hours; Refrigerated: 2 weeks; Frozen: 1 year
0.89 IV or less: Negative - No significant level of influenza A virus IgM antibody detected.
0.90-1.10 IV: Equivocal - Questionable presence of influenza A virus IgM antibody detected. Repeat testing in 10-14 days may be helpful.
1.11 IV or greater: Positive - IgM antibodies to influenza A virus detected, which may suggest current or recent infection.
This test was developed and its performance characteristics determined by ARUP Laboratories. It has not been cleared or approved by the US Food and Drug Administration. This test was performed in a CLIA certified laboratory and is intended for clinical purposes.
Laboratory Developed Test (LDT)
|Component Test Code*||Component Chart Name||LOINC|
|0051081||Influenza A Virus Antibody IgM||31438-5|
- Flu A
- Flu A IgM