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Pan-Influenza Nucleic Acid Detection (Qualitative) by Reverse Transcription Polymerase Chain Reaction (RT-PCR)

Published: August 9, 2026Updated: August 16, 2026

This test checks for genetic material from influenza viruses (like flu A or B) in your respiratory sample. It helps determine if you have an active flu infection.

Quick summary

["Determines whether flu viruses are present in your body for treatment or guidance."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
55465-9
Short code
FLUAV H1 2009 pand RNA Spec Ql NAA+probe
Synonyms
FLUAV H1 2009 pand RNA Spec Ql NAA+probe
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
probe-amp-tar
Specimen volume
5 mL
Stability
Room temperature: 4h, Refrigerated: 24h, Frozen: 7d
Hemolysis max
500
Lipemia max
1000
Icterus max
500
TAT
4–24 hours
Order
routine

How the Test Works

The test uses a small sample of your nasal or throat secretions (collected via a swab). It extracts genetic material (RNA) from any influenza viruses present and amplifies it using RT-PCR. This process detects even small amounts of viral RNA to confirm infection.

What to Expect Before the Test

No special preparation is needed. You may have a nasal or throat swab performed by a healthcare provider. The sample is sent to a lab for analysis.

What the Results Mean

A positive result means the test identified genetic material from influenza viruses, suggesting you likely have an active flu infection. A negative result means no detectable viral RNA was found, but this does not definitively rule out flu if symptoms persist.

When You Might Need This Test

Your doctor may order this test if you have flu-like symptoms (fever, cough, sore throat) and suspect influenza, especially during flu season. It’s also used in outbreaks or for patients at higher risk of severe flu complications.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test is critical for diagnosing influenza early, guiding antiviral treatment, and preventing spread. It helps healthcare providers differentiate flu from other respiratory illnesses and manage outbreaks in communities.

Short name

Influenza Virus RNA Screening

Frequently asked questions

Why did my doctor suggest this test?
Your symptoms, risk factors (like age, chronic health conditions), or recent exposure to flu may have led to this recommendation. It helps confirm or rule out flu quickly.
What if my test is negative but I still feel sick?
A negative result means no detectable flu virus RNA was found at the time of testing. Other viruses or conditions could cause similar symptoms. Follow up with your doctor if symptoms continue.
How soon will I get my results?
Results are typically available within 24 to 48 hours, depending on lab processing times. Your healthcare provider will discuss the results with you.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

Click any link to access the full source. PubMed Central (PMC) links provide free full-text access.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 16, 2026. · Read our editorial policy