Viral RNA Detection in Nasopharyngeal Aspirate by Nucleic Acid Amplification Test (NAAT)
This test checks for the presence of viruses in your nasal or throat secretions using a simple swab. It helps diagnose infections like colds, flu, or other respiratory illnesses.
["Quick viral infection diagnosis with a simple nasal swab test."]
Key facts at a glance
- LOINC
- 85581-7
- Short code
- M avium+M intracel DNA Spt/Bro NAA+probe
- Synonyms
- M avium+M intracel DNA Spt/Bro NAA+probe
- Category
- chemistry
- Sample
- sputum
- Container
- Sterile sputum container
- Units
- N/A
- Ref low
- 0.8
- Ref high
- 1.2
- Critical range
- — – 5 N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- CPT
- 85610
- SNOMED
- 396252006
- Specimen volume
- 3-5 mL
- Stability
- Room temperature: 2h, Refrigerated: 24h
- TAT
- 4–24 hours
- Order
- routine
How the Test Works
A healthcare provider collects a sample from your nose or throat using a soft swab. The swab is then sent to a lab where viral genetic material is extracted and analyzed using a highly sensitive test called nucleic acid amplification. This process detects even small amounts of virus if present.
What to Expect Before the Test
You may experience mild discomfort or a slight tickle when the swab is inserted, but it usually doesn’t cause pain. You can eat, drink, or take medications normally before the test. Avoid heavy sedation or anesthesia if possible, as it may affect sample quality.
What to Expect During the Test
The test takes about 5–15 minutes. You’ll sit comfortably while the provider gently inserts the swab into your nasal passage or throat. The swab is rotated briefly to collect a sample before being removed.
What to Expect After the Test
You may have mild discomfort or a slight sore throat for a few hours. Avoid blowing your nose vigorously or using nasal sprays for 1–2 hours afterward to prevent sample contamination. Most people can return to normal activities immediately.
Reference range
INR: 0.8-1.2 (warfarin: 2.0-3.0)N/A
Inform your healthcare provider if you are taking blood thinners. No special preparation required.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test is crucial for diagnosing viral respiratory infections early, guiding treatment decisions, and preventing the spread of contagious illnesses. It helps doctors differentiate between viral and bacterial infections, ensuring appropriate care. Results can also inform public health measures, such as isolation recommendations or vaccination strategies.
Short name
NAAT for Respiratory Viruses
Frequently asked questions
Why was I asked to take this test?
How long will I need to wait for results?
Can I eat or drink before the test?
Sources
- 1
- 2Lab Tests OnlineSource
- 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.
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