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Herpes Simplex Virus DNA Detection (Quantitative, Serum/Plasma)

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

This test checks for the presence of genetic material from the herpes simplex virus in your blood or plasma, which can help diagnose active herpes infections or monitor viral load.

Quick summary

["Helps identify active herpes infections or track how well your body is handling the virus."]

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

Key facts at a glance

LOINC
86542-8
Short code
HSV DNA Tiss Ql NAA+probe
Synonyms
HSV DNA Tiss 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 Does This Test Measure?

The test detects the DNA sequence of the herpes simplex virus (HSV), a common virus that can cause infections like cold sores or genital herpes. By measuring the amount of viral DNA, doctors can assess whether the virus is currently active in your body.

Why Might You Need This Test?

Your healthcare provider may order this test if you have symptoms like sores, pain, or unusual discharge that could be caused by HSV, or if you have a history of herpes and want to monitor your viral load. It can also help guide treatment decisions or evaluate response to therapy.

Sample Collection and Preparation

A blood sample is taken from a vein in your arm. The blood is then processed to separate the plasma or serum, where the viral DNA is analyzed using advanced laboratory techniques.

How the Results Are Interpreted

Results are typically reported as either positive (indicating detectable HSV DNA) or negative (no detectable viral DNA). The exact amount of viral DNA may also be provided, which can help determine the severity of infection or viral activity.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HSV DNA Test

Frequently asked questions

What Does a Positive Result Mean?
A positive result means the virus is actively present in your blood or plasma, suggesting an active herpes infection. This can guide treatment plans, such as antiviral medications, to manage symptoms and reduce viral spread.
What Does a Negative Result Mean?
A negative result means no detectable viral DNA was found in the sample. However, this does not necessarily mean you are completely free of the virus—it may simply indicate that the virus is not currently active in this sample. HSV can remain dormant in your body.
How Often Should I Get This Test?
The frequency of testing depends on your medical needs. Your healthcare provider will determine how often to repeat the test based on your symptoms, medical history, and treatment plan.
  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