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Test Name:
Influenza Virus A and B Antigens, by EIA, with Influenza Virus A and B, by RT-PCR if Indicated


  • SBMF No:
    21992
  • Performance Lab Name:
    Microbiology
  • Test Mnemonic:
    INF EIA/PC
  • ABN:
    Not required
  • CPT Code:
    87804x2
    If indicated, add 87502
  • LOINC Code:
    6437-8
  • Test Includes:
    Influenza Virus Types A and B, by EIA
    Influenza Virus Types A and B, by RT-PCR (If indicated)
  • Also See:
    36171 Influenza Virus Types A and B, by RT-PCR
  • Spec Type:
    Nasal washing, nasal aspirate, nasopharyngeal swab, nasal swab, or flocked swab
  • Spec Container:
    M4, M4RT, M5, M6, Starswab Multitrans Collection and Transport System, or BD Universal Viral Transport
  • Spec Collect:
    Insert flocked nasopharyngeal swab into patient’s nasal passage until a slight resistance is met
    Rotate swab 2-3 times and hold swab in place for 5 seconds to ensure maximum absorbency
    Withdraw swab and repeat procedure in other nares with the same swab
    Remove swab, place in vial of viral transport media (M4, M6 or UTM), and break off shaft at molded breakpoint
    Note: Also refer to SBMF publications:
    P-1035 Nasopharyngeal Specimen Collection Instructions
    P-1173 Pediatric Nasopharyngeal Specimen Collection Instructions
  • Spec Store Transport:
    Refrigerated
  • Spec Stability:
    3 days (72 hours) refrigerated (2-8°C)
  • Spec Reject:
    Specimens collected on calcium alginate swab, sputum, tracheal aspirate, or bronchial wash samples
  • Methodology:
    Enzyme Immunoassay (EIA)
    Real-Time Reverse Transcription Polymerase Chain Reaction (RT-PCR)
  • Use:
    Detect Influenzae A or Influenzae B virus
  • Clinical Significance:
    Establish if Influenzae A or B are the causative agents and, in some cases, can direct appropriate management
  • Reference Range:
    No detectable Influenza A or Influenza B Virus nucleic acid (NA) by NA amplification
  • Critical High Value:
    Positive for Influenzae A or Influenzae B virus
  • Additional Test Info:
    Results will vary depending on specimen quality/collection/handling, time of year, age of population, geographic location, etc.
    A negative test does not exclude infection, so that the results should be used in conjunction with clinical findings in order to make an accurate diagnosis.
    Both viable and nonviable viruses will be detected by this test.
    This test is performed pursuant to an agreement with Roche Molecular Systems. Inc.
  • Test Type:
    PANEL

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