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Hepatitis B Virus Genotype Identification (Serum/Plasma)

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

This test helps determine which genotype of the Hepatitis B virus you have, which can influence treatment choices and long-term management.

Quick summary

["Understanding your Hepatitis B genotype is key to tailoring your care plan."]

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

Key facts at a glance

LOINC
72850-1
Short code
HBV 85 Islt Genotyp
Synonyms
HBV 85 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 multiple genotypes (groups), each with slightly different behaviors and responses to treatment. Identifying your genotype helps healthcare providers choose the most effective therapy and monitor your progress more accurately.

How the Test Works

A small blood sample is taken and tested using an immunoassay method to detect specific genetic sequences unique to each HBV genotype. This process identifies which genotype is present in your blood.

Sample Collection and Preparation

Your blood will be drawn from a vein, usually in your arm. The sample is then processed and sent to a lab for testing. This test is typically done on serum or plasma.

What to Expect Before the Test

No special preparation is needed for this test. You may have a slight bruise or soreness at the injection site, but this usually goes away quickly.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

◆Associated findings1

Short name

Hepatitis B Genotype Test

Frequently asked questions

Your genotype can affect how your body responds to antiviral medications and the likelihood of chronic infection persisting. Knowing your genotype helps healthcare providers select the most appropriate treatment and monitor your health more effectively over time.
This test is not used to diagnose acute hepatitis B infection but is crucial for managing chronic HBV infection by guiding treatment decisions.
How long will it take to get results?
Results are usually available within 1 to 2 weeks, depending on the lab’s processing time. Your healthcare provider will discuss the results with you during your follow-up visit.
Can this test be done at home?
No, this test requires a blood sample collected by a healthcare professional in a clinical setting. Home collection kits are not available for this specific test.
  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