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Human Viral Hepatitis B DNA (Quantitative) in Whole Blood

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

This test measures the amount of hepatitis B virus DNA in your blood to help assess your risk for chronic infection and monitor treatment progress.

Quick summary

["It helps doctors track whether the virus is active or being controlled by your immune system or medication."]

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

Key facts at a glance

LOINC
49360-1
Short code
HBV DNA Spec NAA+probe-aCnc
Synonyms
HBV DNA Spec NAA+probe-aCnc
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 Matters for Your Health

Hepatitis B is a serious liver infection caused by the hepatitis B virus (HBV). If left untreated, it can lead to long-term liver damage, cirrhosis, or liver cancer. This test specifically looks for the genetic material (DNA) of the virus in your blood, which is key to diagnosing and managing HBV infection.

How the Test Works

The test uses a specialized probe to detect and quantify the HBV DNA in a sample of your whole blood. The results help determine if the virus is present at detectable levels, which can guide treatment decisions.

What to Expect Before the Test

No special preparation is needed for this test. You’ll provide a blood sample, typically drawn from your arm. The sample is then analyzed in a lab to measure the HBV DNA concentration.

What the Results Mean

Results are usually reported as a concentration of HBV DNA (in copies per milliliter of blood). A positive result means the virus is present, while a negative result indicates no detectable virus. If the virus is present, your doctor may recommend further testing or treatment to manage infection.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Hepatitis B Virus DNA (Quantitative)

Frequently asked questions

How often should I get this test?
The frequency of testing depends on your medical history, treatment plan, and doctor’s recommendations. If you have chronic hepatitis B, your doctor may order this test regularly to monitor your condition and response to treatment.
Can I stop taking my medication if the test results are negative?
Not necessarily. Even if the HBV DNA is undetectable, your doctor may continue monitoring you to ensure the virus doesn’t return. Follow your healthcare provider’s advice regarding treatment and follow-up.
What if my test results are positive but my symptoms are mild?
A positive test result doesn’t always mean you have active liver damage. Your doctor may recommend additional tests, like liver function tests, to assess your overall health and guide treatment decisions.
  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