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Hepatitis B Virus Genotype Determination (Serum/Plasma)

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

This test identifies which specific genotype of the Hepatitis B virus you may have, which helps guide treatment and monitoring.

Quick summary

["Knowing your Hepatitis B genotype helps doctors choose the best treatment plan for you."]

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

Key facts at a glance

LOINC
72844-4
Short code
HBV 214 Islt Genotyp
Synonyms
HBV 214 Islt Genotyp
Category
chemistry
Sample
serum
Container
Red-top tube (SST)
Units
N/A
Fasting
false
Population
adult
Sex
all
Age range
18–65 years
Method
genotyping
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

Hepatitis B is a viral infection that can affect your liver. Different genotypes of the virus behave slightly differently, so determining which genotype you have helps healthcare providers tailor your care. This test is important for managing the infection and preventing long-term liver damage.

How the Test Works

A small blood sample is drawn from your arm. The blood is tested in a lab using an immunoassay method to detect specific genetic sequences of the Hepatitis B virus. This helps determine which of the seven known genotypes you have.

Sample Collection

You will have a small needle inserted into your arm to collect blood. This is usually done in a healthcare provider’s office or lab. You may feel a brief pinch, but it typically doesn’t cause significant discomfort. The blood sample is then sent to a lab for testing.

What to Expect After the Test

After your blood sample is taken, you may experience mild bruising or soreness at the injection site. Most people recover quickly without any issues. Your results will be reviewed by a healthcare professional who will discuss them with you.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Hepatitis B Genotype Test

Frequently asked questions

How long will it take to get my results?
Results from this test are typically available within 1 to 2 weeks, depending on your healthcare provider’s lab processing times. Your doctor will contact you once the results are ready to discuss them with you.
What does a positive result mean?
A positive result means that the test detected the genetic material of the Hepatitis B virus in your blood, confirming the presence of the virus. This does not indicate which specific genotype you have, but it confirms that you have an active Hepatitis B infection. Your genotype will be determined from this sample.
Can I have this test if I don’t have symptoms?
Yes, this test can be performed even if you don’t have obvious symptoms of Hepatitis B. It is often recommended for people at higher risk of infection, such as those with certain medical conditions, people who have had exposure to the virus, or those who are part of a group with higher prevalence of Hepatitis B.
  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