Influenza A and B, Direct Immunoassay
Also known as: Flu A and B
Use
Confirm the diagnosis of influenza type A or type B infection. This is a differentiated test and, therefore, will distinguish influenza type A from influenza type B.
Special Instructions
Submit one specimen per test requested. Specify the exact specimen source/origin (e.g., nasopharynx). Indicate a specific test number on the request form. Ensure the expiration date of transport devices is checked and do not use expired devices.
Limitations
Because a negative rapid influenza antigen EIA test may not rule out influenza viral infection, further confirmatory testing using viral culture or nucleic acid amplification is recommended in cases where clinical signs and symptoms are consistent with influenza-like illness. Additionally, this confirmatory testing may assist in detecting other respiratory viruses that can produce similar clinical symptoms.
Methodology
Immunoassay (Other)
Biomarkers
LOINC Codes
- 33535-6
- 46082-4
- 46083-2
- 77202-0
Result Turnaround Time
1-2 days
Related Documents
For more information, please review the documents below
Specimen
Nasopharyngeal Swab
Volume
2 to 3 mL NP wash, 0.5 mL NP aspirate dispersed in at least 2 to 3 mL transport medium or saline, or swab
Minimum Volume
2 mL NP wash, 0.5 mL NP aspirate dispersed in at least 2 to 3 mL transport medium or saline
Container
Viral, Chlamydia, or Mycoplasma culture transport provided by LabCorp, or other appropriate transport medium; sterile leakproof container
Storage Instructions
Refrigerate.
Causes for Rejection
Bacterial swab specimen; specimen received in grossly leaking transport container; dry specimen; specimen submitted in fixative or additive; specimen received in expired transport media or incorrect transport device; inappropriate specimen transport conditions; specimen received after prolonged delay in transport (usually more than 72 hours); specimen stored or transported at room temperature; wooden shaft swab in transport device; unlabeled specimen or name discrepancy between specimen and request label
Other tests from different labs that may be relevant