HBV Genotyping Test: Booking, Price, and Results
About HBV Genotyping Test: Booking, Price, and Results
| Field | Value |
|---|---|
| Also Known As | HBV genotype test, Hepatitis B virus genotyping, HBV genotype sequencing |
| Sample Type | Plasma (venous blood) |
| Fasting Required | No fasting required |
| Report Time | 8 days |
| Recommended For | Adults with confirmed chronic hepatitis B infection; not gender-specific |
| Price | Starting at ₹8,400 |
What is an HBV Genotyping Test?
The HBV genotyping test identifies the genetic variant of the hepatitis B virus (HBV) present in a patient's blood. It classifies the virus into one of several recognised genotypes (A through J) using a real-time PCR method. Doctors typically order this test for patients with confirmed chronic hepatitis B infection before starting or reviewing treatment. It is also known as the HBV genotype test or Hepatitis B virus genotyping.
What Does a HBV Genotyping Test Measure?
The HBV genotyping test analyses a plasma sample to provide three key pieces of information. These help guide treatment decisions and assess disease risk.
The table below summarises the key parameters measured.
| Parameter | What it Tells You |
|---|---|
| HBV Genotype (A to J) | Identifies which genetic variant of the virus is present, which links to disease progression and treatment response |
| Basal Core Promoter (BCP) Mutations | Detects sequence changes in the precore gene region that can affect how much of a viral protein (HBeAg) the body produces |
| Drug Resistance Mutations | Identifies changes in the virus that may reduce the effectiveness of antiviral medications |
Why is an HBV Genotyping Test Done?
This test is used to gather important information about the hepatitis B virus in patients who are already diagnosed with chronic infection. It helps doctors choose the right treatment and assess long-term liver health risks.
Common Symptoms That May Require This Test
Patients already diagnosed with chronic hepatitis B may be referred for this test when they show signs of active disease. Common symptoms include:
- Persistent fatigue without a clear cause
- Jaundice (yellowing of the skin or whites of the eyes)
- Pain or discomfort in the upper abdomen
- Nausea and loss of appetite
- Dark-coloured urine
- Joint pain
- Swelling in the abdomen
Conditions This Test Can Help Detect
The HBV genotyping test provides clinically useful information in several situations. It can help in assessing:
- Risk of cirrhosis (scarring of the liver), which is more common with genotype C infection
- Risk of hepatocellular carcinoma (liver cancer), especially in genotypes C and D
- Likelihood of response to interferon-based therapy (genotypes A and B generally respond better)
- Drug resistance mutations in patients on antiviral therapy
- Persistent viraemia (virus remaining in the blood) despite ongoing treatment
HBV Genotyping Test for Chronic Disease Monitoring
In patients with chronic hepatitis B, the level of viral activity and liver injury can change over time. HBV genotyping is particularly useful before starting interferon therapy, as genotype information directly influences the choice of treatment. It is also used when patients show persistent virus in their blood despite antiviral therapy, helping doctors assess whether drug-resistant mutations have developed.
How to Prepare and What to Expect
No special preparation is needed before an HBV genotyping test. The process is straightforward and similar to a routine blood test.
Do You Need to Fast?
No, fasting is not required before this test. You can eat and drink normally on the day of sample collection.
Practical Tips Before Your Test
A few simple steps will help ensure your sample is collected smoothly. Keep the following in mind:
- Bring a detailed clinical history, including your symptoms, previous test results, and any prior hepatitis B treatment, as this is required for the test
- Inform your doctor or the collection staff about any antiviral or other medications you are currently taking
- Stay well hydrated before the blood draw, as this makes vein access easier
- Inform the laboratory if you have any bleeding disorders or clotting conditions
- Wear loose-fitting clothing with easy access to your inner elbow area
Step-by-Step Procedure
The sample for this test is collected as a blood draw. Here is what to expect during the visit:
- A trained phlebotomist will clean the skin over your inner elbow with an antiseptic swab.
- A small needle is gently inserted into a vein to draw approximately 3 ml of blood into a lavender-top EDTA tube.
- The needle is removed, and gentle pressure is applied to stop any minor bleeding.
- The sample is centrifuged within six hours of collection, and the plasma is transferred to a sealed tube for storage and transport.
- The sample is stored at 2 to 8 degrees Celsius and dispatched to the laboratory.
- At the laboratory, the sample is analysed using real-time PCR to identify the HBV genotype and detect relevant mutations.
Factors That Can Affect Accuracy
Certain conditions can influence the quality or reliability of results. These include:
- A viral load below 500 to 1,000 IU/mL, as the test may not produce a result at very low levels
- Minor viral mutations are present in less than 20% of the total virus population, which may not be detected
- Poor sample handling or delayed centrifugation after collection
- Grossly haemolysed (blood cell breakdown) or lipaemic (high-fat) samples
- Co-infection with more than one HBV genotype at the same time
Understanding Your HBV Genotyping Test Results
Unlike most blood tests, the HBV genotyping test does not produce a numerical value. Instead, it identifies which genotype is present and reports whether drug resistance mutations are detected. Your doctor will use this information alongside your full clinical history to guide treatment decisions.
| Parameter | Possible Result | What it Means |
|---|---|---|
| HBV Genotype | A, B, C, D, E, F, G, H, I, or J | Identifies the specific genetic variant; not a pass or fail result |
| Drug Resistance Mutations | Sensitive / Resistant / Reduced Sensitivity / Possible Resistance | Indicates how the virus may respond to antiviral medications |
These ranges are general guidelines. Your doctor will interpret your results based on your age, health history, and other factors. Always consult a qualified healthcare professional for personalised medical advice.
Results During Special Conditions
Certain circumstances can affect how results are interpreted or whether a result is obtainable at all.
- Patients with a very low viral load (below 500 IU/mL) may receive an inconclusive result, as the test requires sufficient virus in the sample.
- In patients with an immunocompromised state (reduced immune function), viral replication patterns may be altered, which can affect the findings.
- If more than one genotype is present simultaneously, interpretation may be more complex and will need specialist review.
How to Maintain Healthy Levels
While genotype itself cannot be changed, there are steps you can take to support liver health and reduce disease progression.
- Follow your doctor's antiviral treatment plan consistently, without skipping doses.
- Avoid alcohol entirely, as it adds direct stress to the liver in people with hepatitis B.
- Ask your doctor about hepatitis A vaccination if you have not already been immunised, to protect against an additional liver infection.
Lupin Diagnostics HBV Genotyping Test Price and Home Collection
The HBV genotyping test is available at Lupin Diagnostics starting at ₹8,400, with home sample collection offered across cities.
| City | Approximate Price (₹) |
|---|---|
| BHOPAL | 8400 |
| CHENNAI | 8400 |
| HYDERABAD | 8400 |
| KOLKATA | 8400 |
| NAVI MUMBAI | 8400 |
| PUNE | 8400 |
Prices are indicative and may vary by location. Please confirm the current price at the time of booking.
How to Book
- Select the test on the Lupin Diagnostics website.
- Choose your city and preferred time slot.
- Opt for home sample collection by a certified phlebotomist, or visit your nearest Lupin Diagnostics centre.
- Receive your report via email or WhatsApp within the stipulated turnaround time.
Home Collection
Lupin Diagnostics offers home sample collection for the HBV genotyping test across multiple cities, making it convenient for patients to get tested without visiting a centre. All samples are processed in NABL-accredited laboratories by trained professionals. Digital reports are accessible via email or WhatsApp once ready.
Frequently Asked Questions
The HBV genotyping test identifies which genetic variant (genotype A to J) of the hepatitis B virus a patient carries. This information helps predict how the disease may progress and guides doctors in selecting the most effective treatment, particularly for interferon-based therapies.
This test is recommended for patients with confirmed chronic hepatitis B infection, especially before starting treatment. It is also useful for those who are not responding to current therapy or when the doctor needs to assess liver disease risk more precisely.
Genotypes A and D are the most prevalent in India, with genotype D being the dominant strain. Your HBV genotyping test result will specify which genotype is present in your blood.
Yes. Genotypes A and B tend to respond better to interferon and pegylated interferon therapy. Genotypes C and D may require longer treatment courses or alternative antiviral medications. Your doctor will use the genotype result to tailor your treatment plan.
Yes. The test analyses the polymerase gene region of the virus to identify mutations associated with resistance to antiviral drugs such as lamivudine, entecavir, and tenofovir. This is especially useful if you are already on treatment and the virus remains detectable.
At Lupin Diagnostics, the report for the HBV genotyping test is delivered within 8 days of sample collection. Turnaround times may vary slightly depending on sample quality and processing requirements.
If your HBV viral load is below approximately 500 to 1,000 IU/mL, the test may not produce a result. In such cases, your doctor may advise repeating the test at a later stage or using additional methods to assess your condition.
HBV Genotyping Test: Booking, Price, and Results
