Follow-up test for patients with documented influenza A. Not a first-line test for the detection of suspected influenza in most clinical situations. Detects and subtypes the two predominant strains of circulating influenza A (H1N1 and H3N2).
Qualitative Polymerase Chain Reaction
Respiratory specimen: Bronchoalveolar lavage (BAL), nasal wash, nasopharyngeal swab, or pleural fluid.
Fluid: Transfer 1 mL respiratory specimen to a sterile container. (Min: 0.5 mL) Also acceptable: Transfer to viral transport media (ARUP Supply #12884) available online through eSupply using ARUP Connect™ or contact ARUP Client Services at (800) 522-2787. Swabs: Place in viral transport media. Place each specimen in an individually sealed bag.
Specimen source required.
Ambient: 8 hours; Refrigerated: 5 days; Frozen: 2 months
This test targets the H3 and 2009-H1 hemagglutinin genes. The current circulating Influenza A strains are detected and typed (H1N1 and H3N2), however, other H1 and H3 subtypes may also be detected.
Laboratory Developed Test (LDT)
|Component Test Code*||Component Chart Name||LOINC|
|2007470||Influenza A Virus Subtype Source||31208-2|
|2007471||Influenza A Virus Subtype by PCR||34487-9|
- Flu H1,H3 PCR