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Hepatitis B Virus Genotype Determination (Serum)

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

This blood test helps identify which specific genotype of the Hepatitis B virus you may have, which can inform treatment and monitoring decisions.

Quick summary

["Understanding your Hepatitis B genotype helps guide your healthcare provider’s plan for managing the infection."]

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

Key facts at a glance

LOINC
72847-7
Short code
HBV 191 Islt Genotyp
Synonyms
HBV 191 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

What This Test Measures

This test detects the genetic material of the Hepatitis B virus in your blood to determine which of the seven known genotypes you have. Genotypes can vary slightly in how they respond to treatments and may influence long-term health outcomes.

How the Test Works

A small blood sample is taken and analyzed using advanced molecular techniques to identify the specific genetic sequence patterns associated with different Hepatitis B genotypes.

Why It Matters for You

Knowing your genotype helps healthcare providers tailor treatment options, monitor disease progression, and plan for long-term care. Different genotypes may require different approaches to manage symptoms and prevent complications.

Common Uses

This test is typically used in patients who have been diagnosed with Hepatitis B to determine the best course of treatment, assess response to therapy, or evaluate disease activity.

Clinical interpretation

How abnormal results are interpreted and what conditions they suggest.

Clinical Significance: Understanding Hepatitis B Genotypes

Short name

Hepatitis B Genotype Test

Frequently asked questions

How long does it take to get results from this test?
Results from this test are usually available within 5 to 7 business days, depending on the laboratory’s processing schedule. Your healthcare provider will contact you once results are ready.
What does a genotype test tell me about my overall health?
A genotype test specifically identifies the type of Hepatitis B virus you have but does not provide information about your overall health status, liver function, or other health conditions. Additional tests may be needed to assess these aspects.
Can I have this test if I’m not currently experiencing symptoms?
Yes, this test can be performed even if you are not experiencing symptoms. It is often recommended for individuals who have been exposed to Hepatitis B or have been diagnosed with the virus to 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