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Respiratory Virus Nucleic Acid Detection (Lower Respiratory Tract)

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

This test checks for viruses that may cause respiratory infections, such as flu, RSV, or other common cold viruses, by analyzing a sample from your lower respiratory tract.

Quick summary

Helps diagnose infections that may require treatment or monitoring.

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

Key facts at a glance

LOINC
88601-0
Short code
FLUAV + FLUBV Pnl Lower resp NAA+probe
Synonyms
FLUAV + FLUBV Pnl 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

What Is Being Tested?

The test detects genetic material (nucleic acids) from viruses that can cause illnesses like bronchitis, pneumonia, or other lower respiratory tract infections. This includes viruses like influenza, respiratory syncytial virus (RSV), and others.

Why Might You Need This Test?

Your healthcare provider may recommend this test if you have symptoms such as coughing, wheezing, fever, or difficulty breathing, especially if you’re at higher risk for severe illness or if you’re in a setting where respiratory infections are common.

How Is the Sample Collected?

A healthcare professional will insert a thin, flexible tube (nasopharyngeal swab) into your nose to collect a sample from your lower respiratory tract. This is generally done in a doctor’s office or clinic.

What Happens Next?

The sample is sent to a lab, where specialized equipment detects the presence of viral genetic material. Results are typically available within 24 to 48 hours, depending on the lab’s processing time.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test helps confirm or rule out viral infections that may require specific treatments, such as antiviral medications. It can also guide decisions about isolation, further testing, or monitoring of symptoms. Accurate diagnosis is important for managing care and preventing the spread of infection.

Short name

Viral Respiratory Probe

Frequently asked questions

How long does it take to get results?
Results are usually available within 24 to 48 hours, but this can vary depending on the lab’s workflow and your location. Your healthcare provider will contact you once results are ready.
What if my test comes back positive?
A positive result means the test detected viral genetic material in your sample. Your healthcare provider will discuss next steps, which may include starting antiviral treatment, monitoring your symptoms, or recommending additional tests if needed. Follow their guidance for the best care.
Can I take anything special to prepare for this test?
No special preparation is needed. You can eat, drink, or take medications as usual. However, inform your healthcare provider if you’re taking any medications that might affect your immune system or respiratory health.
  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