SARS-CoV-2 Genomic Nucleic Acid Detection by Qualitative Probe (Serum/Plasma)
This test checks for genetic material from the virus that causes COVID-19 in your blood. It helps determine if you have an active infection.
["Assists in diagnosing COVID-19 by detecting viral genetic material in your bloodstream."]
Key facts at a glance
- LOINC
- 94509-7
- Short code
- SARS-rel CoV E gene Ct Spec Qn NAA+probe
- Synonyms
- SARS-rel CoV E gene Ct Spec Qn 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 identify fragments of the virus’s genetic code in your serum or plasma. If the virus is present, the probe will bind to its genetic material, confirming an active infection.
When You Might Need This Test
Your healthcare provider may recommend this test if you have symptoms of COVID-19, have been exposed to the virus, or are in a high-risk group for severe illness. It can also be used during monitoring for suspected reinfection.
What to Expect Before the Test
No special preparation is needed. You may have a blood draw from a vein in your arm. The sample will be sent to a lab for analysis.
What to Expect After the Test
Results are typically available within 24 to 48 hours. If the test is positive, you may need further medical evaluation or treatment. If negative, you may still need to monitor symptoms or follow exposure guidelines.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
Clinical Significance
Short name
COVID-19 Nucleic Acid Test (Serum/Plasma)
Frequently asked questions
This test helps confirm whether you currently have an active COVID-19 infection by detecting viral genetic material in your blood. It can guide treatment decisions, isolate individuals to prevent spread, and monitor for reinfection.
Results may take 24 to 48 hours, but symptoms of COVID-19 may not appear for 2 to 14 days after exposure. If you develop symptoms, contact your healthcare provider sooner for testing.
Yes, healthcare providers may recommend this test for individuals who have been exposed to COVID-19, are in high-risk groups, or are part of screening programs, even if they don’t have symptoms.
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