SARS-CoV-2 Nucleic Acid Test (Qualitative, Specimen: Respiratory)
This test detects the genetic material (nucleic acids) of SARS-CoV-2, the virus responsible for COVID-19, in a sample taken from your respiratory tract. It helps determine if you have an active infection.
["A COVID-19 nucleic acid test checks for the virus in your body to see if you’re currently infected."]
Key facts at a glance
- LOINC
- 94311-8
- Short code
- SARS-CoV-2 N gene Ct Spec Qn NAA N1
- Synonyms
- SARS-CoV-2 N gene Ct Spec Qn NAA N1
- 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-cdc-primer-probe-set-n
- 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 swab to collect a sample from your upper respiratory tract (like your nose or throat). The sample is then analyzed to identify the virus’s genetic material. This process is highly sensitive and can detect even small amounts of the virus.
What to Expect Before the Test
You may need to avoid certain medications (like some antibiotics) before testing, depending on your healthcare provider’s instructions. Follow any specific preparation guidelines they provide to ensure accurate results.
When You Might Need This Test
This test is typically recommended if you have symptoms of COVID-19 (like fever, cough, or shortness of breath), have been exposed to someone with the virus, or if you’re required for travel, work, or school purposes.
What the Results Mean
A positive result means the test detected the virus’s genetic material, indicating an active infection. A negative result means the test did not detect the virus at the time of testing, but you may still need to monitor for symptoms or retest if exposed.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
Nucleic Acid Test for COVID-19
Frequently asked questions
Why is this test important?
What if I get a 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