Skip to content

Nasal swab viral nucleic acid probe test (for respiratory pathogens)

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

This test detects genetic material from certain viruses in your nasal secretions to help diagnose respiratory infections.

Quick summary

["It helps identify viruses that may cause colds, flu, or other respiratory illnesses."]

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

Key facts at a glance

LOINC
98081-3
Short code
CMV DNA # Sal NAA+probe
Synonyms
CMV DNA # Sal 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

A swab is gently inserted into your nose to collect a sample of nasal secretions. The swab is then processed in a lab to detect viral genetic material using a specialized probe technique. This method can identify viruses that cause infections like COVID-19, respiratory syncytial virus (RSV), influenza, and others.

What to Expect Before the Test

You may experience mild discomfort or a slight tickle when the swab is inserted, but it usually only takes a few seconds. No special preparation is needed, but inform your healthcare provider if you have a nasal condition or are taking medications that affect nasal passages.

Common Uses

This test is commonly used to diagnose respiratory infections in patients with symptoms such as cough, fever, sore throat, or shortness of breath. It is particularly useful for identifying viruses in people who may have been exposed to contagious illnesses.

Limitations and Considerations

While this test is highly sensitive, it may not detect all viruses or may give false results if the sample is not collected properly. Results can sometimes take several days to arrive, depending on lab processing times.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Nasal swab viral probe

Frequently asked questions

Why might I need this test?
Your healthcare provider may recommend this test if you have symptoms of a respiratory infection, have been exposed to someone with a contagious virus, or if you are at higher risk for certain infections (e.g., due to age, weakened immune system, or chronic health conditions).
What does a positive result mean?
A positive result indicates the presence of viral genetic material in your nasal sample, suggesting you may have an active viral infection. This does not necessarily mean you are contagious at the exact time of testing, but it confirms the presence of the virus.
How soon will I get my results?
Results can typically be available within 24 to 72 hours, depending on the lab’s workload and testing protocols. Your healthcare provider will contact you with the results once they are ready.
  1. 1
  2. 2
  3. 3

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