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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 have, which can help guide treatment and monitoring.

Quick summary

["Your genotype helps doctors choose the best treatment plan for your hepatitis B infection."]

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

Key facts at a glance

LOINC
72851-9
Short code
HBV 84 Islt Genotyp
Synonyms
HBV 84 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 virus (HBV) has several genotypes, each affecting how the virus behaves differently in the body. Determining your genotype helps healthcare providers tailor your treatment to be most effective, whether that means choosing specific antiviral medications or adjusting your care plan based on how your body responds to the virus.

How the Test Works

This test uses an immunoassay method to detect and classify the HBV genotype from a sample of your blood (serum or plasma). The test looks for specific genetic sequences unique to each HBV genotype, allowing for precise identification.

Sample Collection

A blood sample is drawn from a vein in your arm. This is a standard procedure and typically causes only minor discomfort. The sample is then sent to the lab for testing.

Test Results and Follow-Up

Results will show which HBV genotype you have, such as genotype A, B, C, D, E, or others. Your healthcare provider will discuss the results with you and explain how this information impacts your treatment and care plan.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Hepatitis B Genotype Test

Frequently asked questions

What does a genotype test tell me?
It tells you which specific type (genotype) of the Hepatitis B virus is causing your infection. This information helps your healthcare provider choose the most effective treatment and plan for your care.
How long does it take to get results?
Test results are typically available within 3 to 7 business days, depending on lab processing times. Your healthcare provider will contact you once the results are ready.
Can I have my blood drawn at home?
No, this test requires a blood sample collected by a healthcare professional in a clinical setting. However, you can discuss alternative testing options with your provider if you have concerns about scheduling.
  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