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Hepatitis B Virus DNA (Quantitative) by Nucleic Acid Amplification Probe

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

This test measures the amount of hepatitis B virus DNA in your blood. It helps determine whether you have an active infection and how well your body is responding to treatment.

Quick summary

["This test helps monitor hepatitis B virus activity and treatment effectiveness."]

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

Key facts at a glance

LOINC
49365-0
Short code
HBV DNA # Tiss NAA+probe
Synonyms
HBV DNA # Tiss 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

Why This Test Is Done

Doctors may order this test if you have hepatitis B to check for active viral replication. It’s also used to monitor how your body is responding to antiviral treatment or to assess viral load before or after vaccination.

How the Test Works

A small blood sample is taken to detect the hepatitis B virus DNA using a sensitive probe-based test. This method can identify even very small amounts of the virus in your bloodstream.

Sample Collection

Blood is drawn from a vein, usually in your arm, by a healthcare professional. The sample is then sent to a lab for testing.

What to Expect Before the Test

There are no special preparations needed. You may have some mild discomfort from the needle, but it usually goes away quickly. If you’re on blood thinners or have a history of bleeding issues, let your doctor know.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

HBV DNA (Quantitative)

Frequently asked questions

What does a high HBV DNA level mean?
A high HBV DNA level means your body is actively producing the virus, which can lead to liver damage if untreated. Your doctor will use this information to adjust your treatment plan.
Can this test detect hepatitis B infection early?
Yes, this test can detect hepatitis B infection early by measuring the virus’s genetic material in your blood. It’s particularly useful for monitoring chronic infection and guiding treatment decisions.
Is this test painful?
The blood draw may cause a slight pinch or discomfort, but it’s usually brief. Most people experience minimal pain afterward. If you’re anxious about needles, let your healthcare provider know so they can help make the process more comfortable.
  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