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Viral RNA Detection in Serum/Plasma (Nucleic Acid Probe-Based)

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

This test checks for the presence of viral genetic material in your blood. It helps identify infections caused by viruses that may affect your immune system or organs.

Quick summary

["Detects viral RNA in your blood to guide treatment decisions for infections."]

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

Key facts at a glance

LOINC
85513-0
Short code
HDV RNA Ser NAA+probe-Log IU
Synonyms
HDV RNA Ser NAA+probe-Log IU
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 looks for genetic material (RNA) from viruses in your blood sample. This RNA can indicate whether you have an active viral infection, even if you don’t yet have symptoms. The test uses a specialized probe to detect specific viral sequences, helping doctors confirm or rule out certain viral infections.

Why It’s Done

Your healthcare provider may order this test if you have symptoms like fever, fatigue, or organ-related issues that could suggest a viral infection. It’s also used in monitoring patients with known viral conditions or after exposure to certain viruses.

Sample Collection and Preparation

A blood sample is taken from a vein in your arm. The blood is processed to separate the serum or plasma, which is then analyzed for viral RNA. This process helps ensure accurate detection of the virus without interference from other substances in the blood.

What to Expect Before the Test

No special preparation is needed, but inform your doctor about any medications or conditions that might affect test results. Avoid alcohol or strenuous activity before the blood draw if instructed.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Viral RNA Test

Frequently asked questions

How long does it take to get results?
Results are typically available within 24 to 48 hours, depending on lab processing times. Your doctor will discuss the results with you during your follow-up visit.
Can I have this test if I’m pregnant?
Yes, this test can be performed during pregnancy if medically necessary. However, discuss any potential risks or benefits with your healthcare provider, as some viral infections may have implications for fetal health.
What if my results are positive?
A positive result means you have an active viral infection. Your doctor will work with you to determine the best treatment plan, which may include antiviral medications, rest, hydration, or monitoring for complications. Follow-up tests may be needed to track your recovery.
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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