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Viral Nucleic Acid Detection in Serum/Plasma (Qualitative)

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

This test checks for the presence of viral genetic material in your blood, often used to diagnose infections like hepatitis B or C, COVID-19, or other viral illnesses.

Quick summary

["Helps confirm or rule out viral infections by detecting their genetic material in your blood."]

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

Key facts at a glance

LOINC
16980-5
Short code
HTLV II DNA Spec Ql NAA+probe
Synonyms
HTLV II DNA Spec 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 detects viral genetic material (nucleic acids) using a specialized probe. If the virus is present, the test will identify its DNA or RNA fragments in your serum or plasma sample.

How the Sample Is Collected

A blood sample is drawn from a vein, typically in your arm. The blood is processed to separate the serum or plasma for testing.

Why It’s Ordered

Doctors may order this test to diagnose or monitor viral infections, track treatment response, or check for viral load in conditions like hepatitis, HIV, or other viral illnesses.

What to Expect Before the Test

No special preparation is needed, but inform your healthcare provider if you’re on blood-thinning medications or have a history of bleeding disorders.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: This test is critical for diagnosing viral infections early, guiding treatment decisions, and monitoring disease progression or response to therapy. It can also help determine if a viral infection has cleared or if it’s active.

Short name

Viral RNA Test (Serum/Plasma)

Frequently asked questions

How long does it take to get results?
Results are typically available within 1–3 business days, depending on lab processing times.
What does a positive result mean?
A positive result indicates the presence of viral genetic material in your blood, suggesting an active viral infection. Your doctor will interpret results in the context of your symptoms and medical history.
Can I get this test at home?
No, this test requires a blood sample collected by a healthcare professional in a clinical setting.
  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