SARS-CoV-2 Nucleic Acid Response Test (Qualitative, Probe-Based)
This test detects genetic material from the virus responsible for COVID-19 to help determine if you have an active infection.
["Helps identify if you currently have COVID-19 by checking for the virus’s genetic material."]
Key facts at a glance
- LOINC
- 94502-2
- Short code
- SARS-rel CoV RNA Resp Ql NAA+probe
- Synonyms
- SARS-rel CoV RNA Resp Ql 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
The test uses a specialized probe to search for the virus’s RNA in a sample taken from your respiratory system (e.g., nasal or throat swab). If the virus’s genetic material is present, the test will return a positive result, indicating an active infection.
Sample Collection
A healthcare provider will collect a sample from your nose or throat using a swab. The sample is then sent to a lab for testing.
Test Results Interpretation
A positive result means you likely have an active COVID-19 infection and should follow medical advice for treatment and isolation. A negative result means the virus’s genetic material was not detected in the sample at the time of testing, but this does not guarantee you are no longer infected.
When You Might Need This Test
This test is commonly used for diagnosing suspected COVID-19 infections, especially in cases where symptoms are present or if you’ve been exposed to someone with the virus. It may also be used for screening in healthcare settings or before certain activities (e.g., travel, returning to work).
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
COVID-19 RNA Test (Qualitative)
Frequently asked questions
This test plays a critical role in public health by identifying active infections early, allowing for prompt isolation, treatment, and prevention of virus spread. It helps healthcare providers make informed decisions about patient care and manage outbreaks in communities.
A positive result strongly suggests you have an active COVID-19 infection. You should contact your healthcare provider for guidance on next steps, which may include starting treatment, monitoring symptoms, or isolating to prevent spreading the virus to others.
A negative result means the virus’s genetic material was not detected in the sample at the time of testing, but it does not guarantee you are completely free of the virus. Some people may still be infectious even if test results are negative, especially if they were recently exposed or have mild symptoms.
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