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Influenza RNA Detection by Nucleic Acid Amplification Probe

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

This test checks for the presence of the genetic material (RNA) from the influenza virus in your respiratory secretions. It helps determine if you have an active flu infection.

Quick summary

["This test quickly identifies flu viruses to guide treatment and reduce spread."]

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

Key facts at a glance

LOINC
92142-9
Short code
FLUAV RNA Resp Ql NAA+probe
Synonyms
FLUAV RNA Resp 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

Your healthcare provider will collect a sample from your nose or throat using a swab. The swab is then sent to a lab where specialized equipment detects the influenza virus RNA using a probe-based amplification method. This process identifies whether the virus is present without needing to grow it in a lab first.

What to Expect Before the Test

You may experience mild discomfort or irritation when the swab is inserted, but it typically only takes a few seconds. Avoid eating, drinking, or smoking for about 15 minutes before the test if instructed by your provider.

What to Expect After the Test

After the test, you can resume normal activities. There are no special aftercare instructions unless your provider advises otherwise. The results are usually available within a few hours or the next day.

When This Test Is Used

This test is commonly used during flu season or when flu-like symptoms are suspected. It is particularly useful for diagnosing influenza in patients who may not yet show symptoms or when other tests are unavailable.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Influenza RNA Test

Frequently asked questions

How soon can I expect results?
Results are typically available within a few hours or by the next morning. Your healthcare provider will contact you directly with the results once they are ready.
Is there any preparation needed before the test?
No specific preparation is needed, but you may be asked to avoid eating, drinking, or smoking for about 15 minutes before the test if instructed by your healthcare provider.
Can I have false-positive or false-negative results?
While rare, both false-positive and false-negative results can occur. False positives may happen if other respiratory viruses are present, and false negatives can occur if the virus is not actively replicating at the time of testing. Follow-up testing or clinical correlation may be needed if results are uncertain.
  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