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Influenza A and B Nucleic Acid Detection (Respiratory Specimen) by Probe-Based Assay

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

This test checks for the presence of genetic material from influenza viruses (types A and B) in your respiratory secretions, helping determine if you have an active infection.

Quick summary

["A quick way to identify flu infection using a simple nasal or throat swab."]

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

Key facts at a glance

LOINC
91072-9
Short code
FLUAV Subtyp Lower resp NAA+probe
Synonyms
FLUAV Subtyp Lower resp 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 specialized probe to detect genetic material from influenza viruses in your sample. This is done through a molecular process that identifies viral RNA, confirming whether the flu is causing your symptoms.

Preparation for the Test

No special preparation is needed. You may have a nasal or throat swab collected by a healthcare provider during your visit.

What to Expect After the Test

Results are typically available within a few hours. You’ll receive them directly from your healthcare provider, who will discuss them with you.

When This Test Might Be Ordered

Your doctor may recommend this test if you have flu-like symptoms (fever, cough, sore throat) and suspect influenza, especially during flu season or after exposure to someone with the flu.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Influenza Virus Test (Nasal/Swab)

Frequently asked questions

How long does it take to get results from this test?
Results are usually available within a few hours, depending on lab processing times. Your healthcare provider will contact you once they have the results.
Can I have this test done at home?
Currently, this test is typically performed in a clinical or laboratory setting by a healthcare provider. Home testing kits for this specific molecular assay are not widely available.
What if my test comes back positive for influenza?
If positive, follow your healthcare provider’s advice for treatment, which may include antiviral medications to shorten the illness and reduce complications. Rest, hydration, and over-the-counter medications for symptoms can also help.
  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