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Viral Nucleic Acid Detection in Serum/Plasma by Probe-Based Assay

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

This test detects genetic material from certain viruses in your blood, helping identify infections like hepatitis or COVID-19.

Quick summary

["A simple blood test to check for viral infections that may require treatment or monitoring."]

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

Key facts at a glance

LOINC
43730-1
Short code
EBV DNA SerPl NAA+probe-aCnc
Synonyms
EBV DNA SerPl NAA+probe-aCnc
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

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms like fever, fatigue, or flu-like illness, or if you’ve been exposed to a virus. It can also be used to monitor chronic viral infections or guide treatment decisions.

What to Expect Before the Test

No special preparation is needed. You’ll have a small needle inserted into your arm to draw blood. The test is usually done in a lab, and results are available within hours to days depending on the lab.

What the Test Results Mean

Positive results indicate the presence of viral genetic material, suggesting an active infection. Negative results mean no detectable virus was found in your sample at the time of testing. Follow-up testing or additional questions may be needed based on your symptoms and medical history.

Common Conditions Monitored

This test is often used to diagnose or confirm infections caused by viruses such as hepatitis B, hepatitis C, or respiratory viruses like SARS-CoV-2 (the virus responsible for COVID-19). It can also help track viral load in chronic infections.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Viral RNA Test (Serum/Plasma)

Frequently asked questions

How long will I need to wait for my results?
Results are typically available within 24 to 48 hours, but this can vary by lab. Your healthcare provider will contact you directly with the results, so check with them for an estimated timeline.
Is there any risk or discomfort with this test?
There’s a small risk of bruising, soreness, or a slight pinch during the blood draw. Most people experience minimal discomfort. If you have a bleeding disorder or are on blood thinners, let your provider know before the test.
Can I eat or drink before this test?
No special diet or fasting is required for this test. You can eat and drink normally before your blood draw.
  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