Hepatitis B virus (HBV) genotyping
Quick answer: This test identifies which genotype (strain group) of hepatitis B virus is present in your blood. Specialists may order it in people with chronic hepatitis B to help plan and predict response to treatment.
- SampleBlood
- TakesAbout 5 minutes
- Before the testNo special preparation is usually needed.
How the test is done
- 1A nurse checks the liver specialist's request
- 2A vein in your arm is cleaned
- 3Blood is drawn into a tube suitable for viral genetic testing
- 4The lab reads the virus's genetic code to name its genotype
What your results can mean
Reading your report
The report names the genotype found; your liver specialist explains what it means for your treatment.
If the result is outside the usual range
The report names the genotype, usually a letter from A to H. Some genotypes are linked with different chances of response to interferon treatment and different disease patterns.
Who usually has this test
People with long-term hepatitis B being considered for certain treatments, mainly under a liver specialist.
Risks and aftercare
No special aftercare; your specialist explains how the genotype affects your plan.
Names and options
Also called: HBV genotype, hepatitis B genotyping
Listed by the hospital as
- HBV GENOTYPING (EDTA, SERUM)
Questions about this test
Why does hepatitis B genotype matter?
Different genotypes can behave a little differently over time and respond differently to interferon. For tablet treatments, genotype usually matters less.
Does genotyping work if my viral load is very low?
The test needs enough virus in the blood to read. If your viral load is very low, the lab may not be able to give a genotype.
Do I need hepatitis B genotyping before pregnancy?
Not usually. Viral load and HBeAg are more useful for planning pregnancy care.
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Tamara Hospital & IVF Centre, Rajajinagar
34/3, 10th Cross Road, opp. Vardhaka Sardar Patel School, 1st N Block, 2nd Stage, Rajajinagar, Bengaluru 560010
The hospital is open 24 hours. Call before you come to check the timing for your scan or sample collection.
Get directions ↗IVF Pulse fertility care at Tamara Hospital →
Reception
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IVF lab
This page explains each test in general terms so you know what to expect. It is not medical advice: your doctor decides which tests you need and what your results mean. Reference ranges differ between laboratories. Updated 4 November 2026.