Skip to content

Nasal swab viral nucleic acid detection (for respiratory viruses)

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

This test checks for the presence of genetic material from certain viruses in your nasal swab, often used to 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
101786-2
Short code
T gondii DNA Ser Ql
Synonyms
T gondii DNA Ser Ql
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

Why This Test Is Done

Your healthcare provider may recommend this test if you have symptoms like cough, sore throat, fever, or shortness of breath. It can also be used in outbreaks or when other tests are inconclusive.

How the Test Works

A swab is gently inserted into your nose to collect a sample of mucus. The swab is then tested in a lab to detect viral genetic material using advanced molecular techniques.

Common Symptoms It Helps Diagnose

This test is commonly used to diagnose infections caused by viruses like rhinovirus, influenza, respiratory syncytial virus (RSV), or coronavirus.

What to Expect Before the Test

No special preparation is needed. You may experience mild discomfort, but it usually takes only a few seconds. You can eat, drink, or take medications as usual.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Frequently asked questions

How long does it take to get results?
Results are typically available within 24 to 72 hours, depending on lab processing times.
Can I have false-positive or false-negative results?
While rare, false results can occur due to lab errors, sample contamination, or timing of the test. Your provider will discuss results and next steps based on your symptoms and clinical picture.
Is there any risk or discomfort with this test?
The test involves minimal discomfort, like a slight tickle or mild irritation in the nose. Most people tolerate it well, and no serious risks are associated with this procedure.
  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