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SARS-CoV-2 Genomic Respiratory Pathogen RNA Detection by Probe-Based Assay

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

This test checks for genetic material from the virus that causes COVID-19 in a sample taken from your respiratory tract (e.g., nasal or throat swab). It helps determine if you may have an active infection.

Quick summary

["Assists in diagnosing COVID-19 infection by detecting viral genetic material."]

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

Key facts at a glance

LOINC
94758-0
Short code
SARS-rel CoV E gene Resp Ql NAA+probe
Synonyms
SARS-rel CoV E gene 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 detect the presence of SARS-CoV-2 RNA in your respiratory sample. If the virus is present, the probe binds to its genetic material, triggering a signal that confirms infection status.

What to Expect Before the Test

No special preparation is needed. You’ll have a quick nasal or throat swab, similar to a cold test. Wear a mask if you’re feeling unwell to avoid spreading germs.

What the Test Results Mean

A positive result means the virus is likely present and you may have an active COVID-19 infection. A negative result does not always rule out infection, especially if symptoms persist or you were exposed recently. Follow-up testing may be recommended.

When You Might Need This Test

This test is commonly used for diagnosing suspected COVID-19, especially in settings like healthcare facilities, schools, or when travel or exposure to others is a concern.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

COVID-19 RNA Test (Respiratory)

Frequently asked questions

Why did my doctor order this test?
Your doctor may have ordered 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 helps confirm whether you need treatment or isolation.
What if my test result is negative but I still feel sick?
A negative result means the virus was not detected at the time of testing, but COVID-19 can sometimes take days to develop symptoms. If you continue to feel unwell, consult your doctor for further evaluation.
How long does it take to get my results?
Results are typically available within 24 to 72 hours, depending on the lab and testing location. Your healthcare provider will contact you with the outcome once it’s ready.
  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