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Plasma Donor RNA Probe Analysis for Viral Detection (e.g., Hepatitis, HIV)

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

This test checks for specific viral genetic material in your plasma using a molecular probe. It helps identify infections like hepatitis or HIV that may not show up in standard blood tests.

Quick summary

["Detects hidden viral infections that could affect your health over time."]

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

Key facts at a glance

LOINC
75860-7
Short code
HAV RNA+B19 DNA Pnl Plas Donr NAA+probe
Synonyms
HAV RNA+B19 DNA Pnl Plas Donr 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 detect the presence of viral RNA fragments in your plasma. RNA is a molecule that viruses use to replicate and can be found in the blood if an infection is present, even if symptoms aren’t yet obvious.

Why It’s Ordered

Your healthcare provider may order this test if you have risk factors for viral infections (e.g., exposure to bloodborne pathogens, certain medical conditions, or symptoms like fatigue, fever, or unexplained liver issues). It’s also used in donor screening to ensure safety.

Sample Collection and Process

A blood sample is drawn from a vein, and plasma is separated for testing. The viral RNA is extracted from the plasma and analyzed using a probe-based technique, which detects even small amounts of viral genetic material.

What to Expect Before the Test

No special preparation is needed, but inform your provider about any medications or recent illnesses. Avoid alcohol or strenuous activity 24 hours before the draw.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

This test plays a critical role in diagnosing viral infections early, especially in asymptomatic individuals or those with vague symptoms. Early detection can guide treatment decisions, monitor donor safety, or prevent transmission in healthcare settings.

Short name

Viral RNA Screening Probe

Frequently asked questions

Why might my provider recommend this test?
Your provider may suggest it if you’ve had exposure to viruses like hepatitis B, hepatitis C, or HIV, have symptoms that don’t match a clear cause, or are a blood donor. It’s also used in research or follow-up for chronic conditions.
What does a positive result mean?
A positive result indicates the presence of viral RNA in your plasma, suggesting an active infection. This doesn’t always mean you’re contagious, but it warrants further evaluation by your healthcare provider to determine the best next steps.
Can I get this test at home?
No, this test requires a lab sample collected by a healthcare professional. Some at-home viral testing kits exist but are typically for different analytes (e.g., antigen detection). Always follow your provider’s instructions.
  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