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SARS-CoV-2 Nucleic Acid Gene Saliva Test (Qualitative)

Published: August 9, 2026Updated: August 16, 2026

This test detects genetic material from the SARS-CoV-2 virus in your saliva to determine if you have an active infection with COVID-19.

Quick summary

["A positive result suggests recent infection; a negative result means the test was negative at the time of collection."]

Medically reviewed by WellAlly Editorial TeamLast reviewed August 16, 2026Editorial policy

Key facts at a glance

LOINC
96448-6
Short code
SARS-CoV-2 N gene Sal Ql NAA N1
Synonyms
SARS-CoV-2 N gene Sal Ql 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

What This Test Measures

The test looks for specific genetic sequences (genes) from the SARS-CoV-2 virus in your saliva. These sequences are unique to the virus and help confirm if you are currently infected with COVID-19. The test uses a molecular method to identify these genetic fragments, which can indicate the presence of the virus even if symptoms are mild or absent.

How the Test Works

Saliva is collected using a simple swab or drop collection method. The sample is then analyzed in a lab to detect viral genetic material. If the virus is present, the test will identify its genetic material, confirming an active infection.

When to Get Tested

This test is typically recommended if you have symptoms of COVID-19 (such as fever, cough, or difficulty breathing), have been exposed to someone with COVID-19, or are in a setting where testing is required (e.g., travel, workplace, or school). It can also be used for screening in asymptomatic individuals in certain high-risk or high-transmission environments.

Test Limitations

While this test is highly accurate, it may not detect the virus immediately after exposure. Results can sometimes take several days to return, depending on the lab’s processing time. False negatives are possible if the test is taken too soon after exposure or if the sample is not collected correctly.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

SARS-CoV-2 RNA Test (Saliva)

Frequently asked questions

Why might my doctor order this test?
Your doctor may recommend this test to confirm a diagnosis of COVID-19, especially if symptoms are present or if you have been exposed to someone with the virus. It can also be used for monitoring in high-risk settings, such as healthcare facilities, long-term care facilities, or during outbreaks. A positive result means you should isolate and follow public health guidelines to prevent spreading the virus.
What does a positive result mean?
A positive result indicates that the SARS-CoV-2 virus is present in your saliva at the time of testing, meaning you are currently infected and may be contagious. You should stay home, avoid close contact with others, and follow isolation guidelines provided by health authorities.
Can I get this test at home?
Yes, some testing sites offer at-home saliva collection kits. You will need to follow specific instructions to collect the sample properly. If you are unsure about the process or have questions, contact your healthcare provider or the testing facility for guidance.
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

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