Human Herpesvirus 6 (HHV-6) DNA in Whole Blood by Nucleic Acid Probe
This test detects genetic material (DNA) from Human Herpesvirus 6 in your blood. It helps identify if the virus is actively present, which can be useful in certain medical evaluations.
["This test checks for active HHV-6 infection in your bloodstream."]
Key facts at a glance
- LOINC
- 49391-6
- Short code
- HHV6 DNA # Bld NAA+probe
- Synonyms
- HHV6 DNA # Bld NAA+probe
- Category
- chemistry
- Sample
- whole-blood
- Container
- Lavender-top (EDTA)
- Units
- N/A
- Fasting
- false
- Population
- adult
- Sex
- all
- Age range
- 18–65 years
- Method
- probe-amp-tar
- Specimen volume
- 3 mL
- Stability
- Room temperature: 4h, Refrigerated: 24h
- Hemolysis max
- 0
- Lipemia max
- 0
- Icterus max
- 0
- TAT
- 4–24 hours
- Order
- routine
Why Might This Test Be Ordered?
Your healthcare provider may recommend this test if you have symptoms or conditions linked to HHV-6, such as severe or persistent fever, neurological issues, or immune system problems. It may also be used to monitor patients undergoing certain treatments, like stem cell transplants, where infections can be more dangerous.
What Does a Positive Result Mean?
A positive result indicates the presence of HHV-6 DNA in your blood, suggesting active infection. This doesn’t always mean you’re sick right now, but it confirms the virus is present. Further evaluation by your doctor will help determine next steps, such as treatment or monitoring.
What Does a Negative Result Mean?
A negative result means no detectable HHV-6 DNA was found in your blood sample at the time of testing. This could mean the virus isn’t actively replicating, but it doesn’t rule out past infection or a low-level presence that wasn’t detected.
Sample Collection and Preparation
This test uses a blood sample collected from a vein. A healthcare professional will insert a small needle into your arm to draw blood. The blood is then processed to extract DNA for testing. No special preparation is needed, but avoid vigorous exercise or eating heavy meals before the test.
Clinical interpretation
How abnormal results are interpreted and what conditions they suggest.
◆Associated findings1
Short name
HHV-6 DNA Test
Frequently asked questions
How is this test used in clinical practice?
What are the typical reference ranges?
Can this test detect past infections?
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