Influenza A and B Antigen Immunoassay
Also known as: Flu
Use
This test is a rapid, qualitative immunoassay that detects antigens associated with both viable and nonviable influenza A and B viruses, differentiating between types A and B but not subtypes. It is intended for use with nasal washes or swabs and throat swabs. It has not been validated for monitoring antiviral therapy. The test's sensitivity in manufacturer studies ranged from 37% to 100%, and specificity ranged from 40% to 100%, although more sensitive and specific methods may be available. A positive result indicates detection of influenza A and/or B antigen, which may or may not correlate with clinical symptoms and does not exclude coinfection with other pathogens.
Special Instructions
Not provided.
Limitations
False-negative results can occur due to inadequate specimen (e.g., insufficient nasal or pharyngeal exudate), low levels of viral shedding, or improper specimen transport. The assay cannot differentiate influenza virus subtypes and has not been validated for monitoring antiviral therapy.
Methodology
Immunoassay
Biomarkers
Influenza A antigen
ProteinInfluenza B antigen
Protein
Result Turnaround Time
Not provided.
Related Documents
For more information, please review the documents below
Specimen
Nasopharyngeal Swab
Volume
Not provided
Minimum Volume
Not provided
Collection Instructions
Can be performed using nasal washes or swabs and throat swabs.
Other tests from different labs that may be relevant