SARS-CoV-2 Nucleic Acid Test (Qualitative, Specimen: Saliva)
This test detects genetic material from the virus that causes COVID-19 in a saliva sample. It helps determine if you currently have an active infection.
["A COVID-19 test to check for the virus in your saliva."]
Key facts at a glance
- LOINC
- 41459-9
- Short code
- SARS-CoV Spec Ql
- Synonyms
- SARS-CoV Spec Ql
- Category
- chemistry
- Sample
- serum
- Container
- Red-top tube (SST)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- 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 special process called polymerase chain reaction (PCR) to identify tiny pieces of the virus’s genetic material. Even small amounts of the virus can be detected this way, which helps confirm an infection.
What to Expect Before the Test
No special preparation is needed. You’ll provide a saliva sample, often collected by swabbing your mouth or spitting into a container. Some labs may ask you to avoid eating or drinking for a short time before testing.
When You Might Need This Test
Your healthcare provider may recommend this test if you have symptoms like fever, cough, or shortness of breath, or if you’ve been exposed to someone with COVID-19. It’s also used for screening in settings like schools, workplaces, or travel.
What the Results Mean
A positive result means the test found genetic material from the virus, suggesting you have an active COVID-19 infection. A negative result means the test did not detect the virus’s genetic material at the time of testing, but this can sometimes be due to early infection or testing too soon.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
This test plays a critical role in managing public health by identifying active infections. Early detection helps prevent the spread of COVID-19 and allows for prompt treatment and isolation if needed. It’s also important for monitoring in high-risk groups or during outbreaks.
Short name
SARS-CoV-2 PCR (Saliva)
Frequently asked questions
What does a positive result mean?
Can I get a false negative 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