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SARS-CoV-2 Variant Detection by Nucleic Acid Amplification Probe (NAAT)

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

This test checks for specific genetic variations of the SARS-CoV-2 virus, which can help determine the strain causing your infection. It uses a sample of respiratory secretions (like nasal swab or saliva) to detect these variants.

Quick summary

["This test helps healthcare providers identify which COVID-19 variant you may have, guiding treatment and public health decisions."]

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

Key facts at a glance

LOINC
100156-9
Short code
SARS-CoV-2 variant Spec NAA+probe
Synonyms
SARS-CoV-2 variant Spec 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 involves collecting a sample from your nose, throat, or saliva. The sample is then analyzed using a molecular method (nucleic acid amplification) to detect specific genetic sequences unique to certain SARS-CoV-2 variants. A probe is used to identify these sequences, helping to differentiate between variants.

Sample Collection

You’ll likely have a nasal or throat swab, or provide a saliva sample. The test is usually done as part of routine COVID-19 testing, often at a clinic, hospital, or testing center.

What the Results Mean

If the test detects a specific variant, it confirms the presence of that strain. Results help healthcare providers tailor treatment, monitor outbreaks, and inform public health strategies. Results may also be used to track the spread of variants in your community.

Common Uses

This test is primarily used to identify which SARS-CoV-2 variant is causing your infection. It supports decisions about treatment options, infection control measures, and vaccine effectiveness.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

SARS-CoV-2 Variant Test

Frequently asked questions

Why might I need this test?
You may need this test if your healthcare provider suspects a specific variant based on symptoms, exposure history, or other testing results. It’s also used in research, public health surveillance, or during outbreaks where variant tracking is critical.
What does a positive result mean?
A positive result indicates the presence of a particular SARS-CoV-2 variant. This doesn’t necessarily mean you’ll have different symptoms or outcomes than others with other variants, but it helps healthcare providers adjust care plans.
How soon will I get my results?
Results are typically available within 24 to 72 hours, depending on the testing facility and processing time. Your healthcare provider will contact you with the results.
  1. 1
    MedlinePlus — Laboratory TestsSource
  2. 2
    Lab Tests OnlineSource
  3. 3
    Mayo Clinic — Tests & ProceduresSource

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.

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