SARS-CoV-2 Nucleic Acid Test (Qualitative, Probe-Based)
This test detects genetic material from the virus responsible for COVID-19, helping determine if you currently have an active infection.
["A COVID-19 test that checks for the virus’s genetic material to confirm infection status."]
Key facts at a glance
- LOINC
- 96986-5
- Short code
- SARS-CoV-2 N gene Nose Ql NAA+n-prb
- Synonyms
- SARS-CoV-2 N gene Nose Ql NAA+n-prb
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- non-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
The test uses a specialized probe to identify fragments of the virus’s genetic code in your sample. If the virus is present, the probe binds to its genetic material, triggering a detectable signal. This process is highly sensitive and designed to detect even small amounts of viral RNA.
What to Expect Before the Test
No special preparation is needed for this test. You may have a nasal or throat swab collected, depending on the testing method. If you’re using a self-collected sample (like a saliva test), follow the instructions provided with your kit to ensure accuracy.
What to Expect After the Test
Results are typically available within 24 to 72 hours, depending on the lab’s processing time. If you receive a positive result, follow your healthcare provider’s guidance for next steps, such as isolation or treatment. A negative result means the virus was not detected at the time of testing, but you may still be at risk of infection.
When This Test Is Used
This test is commonly used for diagnosing active COVID-19 infections, especially in asymptomatic individuals, during outbreaks, or before gatherings where exposure risk is high. It may also be used for screening in healthcare settings, schools, or workplaces.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
A positive result confirms an active SARS-CoV-2 infection and is critical for guiding treatment, isolating individuals to prevent spread, and monitoring outbreaks. While a negative result may indicate no current infection, it does not guarantee immunity or protect against future exposure. This test is most reliable when performed early in the course of illness or during active transmission periods.
Frequently asked questions
What does a positive result mean?
Can I get a false positive result?
How long does it take to get results?
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