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SARS-CoV-2 (COVID-19) Gene Specific Nucleic Acid Probe Test (Serum/Plasma)

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

This test detects genetic material from the SARS-CoV-2 virus, which causes COVID-19, in your blood sample. It helps confirm if you have an active infection.

Quick summary

["This test can help determine if you currently have COVID-19 by checking for the virus’s genetic material in your blood."]

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

Key facts at a glance

LOINC
94765-5
Short code
SARS-rel CoV E gene SerPl Ql NAA+probe
Synonyms
SARS-rel CoV E gene SerPl 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

What This Test Measures

The test uses a specialized probe to identify specific genetic sequences unique to the SARS-CoV-2 virus. If these sequences are present, it suggests an active infection. This method is highly sensitive and can detect very small amounts of viral genetic material.

How the Test Works

Your blood sample is analyzed using a technique that extracts and examines viral genetic material. The probe binds to the virus’s DNA or RNA, allowing the lab to confirm its presence if detected.

Why It’s Done

This test may be recommended if you have symptoms of COVID-19, have been exposed to someone with the virus, or if you’re in a high-risk group for severe illness. It helps guide treatment decisions and monitor recovery.

When Results May Be Positive

Results may be positive shortly after infection (within days of symptom onset) and can remain positive for weeks, depending on the stage of illness. False positives are rare but possible, especially if the test is done too soon after exposure.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance

Short name

COVID-19 Nucleic Acid Probe Test

Frequently asked questions

How long will it take to get my results?
Results are typically available within 24 to 72 hours, depending on lab processing times. Your healthcare provider will contact you with the final report.
Can I get this test at home?
No, this test is performed in a clinical laboratory using a blood sample collected by a healthcare professional. Home tests for viral genetic material are not the same as this test.
What if my test is positive?
If positive, follow your healthcare provider’s recommendations for isolation, treatment, and monitoring. This includes seeking medical care if symptoms worsen and continuing precautions to prevent spreading the virus.
  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