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CION Cancer Clinics
Hepatitis testing at diagnosis: why it is always done | CION Cancer Clinics
Everyone diagnosed with liver cancer is tested for hepatitis B and C, even if they tested negative before. The result shows what may have caused the cancer, whether the liver needs antiviral protection, and whether treatment could trigger a flare. This page explains each test, what a positive result changes, and why the family may be offered testing too. At CION Cancer Clinics, our team goes through your scan, blood test and biopsy reports with you and plans the next step.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed October 2026, next review due October 2027
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On this page
- Why test for hepatitis when the problem is liver cancer?
- What can a hepatitis result change about my treatment?
- Which hepatitis tests are done, and what does each mean?
- What happens if a hepatitis test comes back positive?
- What do families believe about hepatitis tests that is not true?
- What can this page not tell you?
- Common questions about hepatitis testing at diagnosis
The short answer
Why test for hepatitis when the problem is liver cancer?
Hepatitis B and C are among the commonest causes of primary liver cancer, and an active infection changes how safely the cancer can be treated. So everyone diagnosed with liver cancer is tested, even people who were told years ago that they were negative.
The test is not an accusation. It does not mean the doctor thinks you did anything wrong. Many people in India picked up hepatitis B at birth or in early childhood, long before they could know about it, and many never had any symptoms.
Which liver cancer this page is about
This page is mainly about primary liver cancer, called hepatocellular carcinoma (HCC), which starts in the liver itself. Hepatitis testing is also routine before many cancer treatments elsewhere in the body, because chemotherapy and some other medicines can wake up a sleeping hepatitis B infection. If your cancer started somewhere else and spread to the liver, see primary versus secondary liver cancer.
A positive result is information your team can act on. It is not a judgement.What the result changes
What can a hepatitis result change about my treatment?
The result feeds into four separate decisions, and only one of them is about the cancer itself.
Protecting the liver you have left
An active virus keeps damaging the liver. Antiviral tablets, given by a hepatologist or physician, can calm hepatitis B and clear hepatitis C. A steadier liver copes better with surgery, TACE and medicines.
Preventing a flare during treatment
Chemotherapy, some targeted medicines, steroids and procedures that stress the liver can let hepatitis B multiply again. This is called reactivation. Preventive antiviral tablets, started before treatment, lower that risk.
Choosing and timing treatment
The team weighs the infection alongside the tumour and liver function. It can affect which medicine is chosen and what extra blood tests are planned.
Often affects
- Immunotherapy and targeted therapy plans
- Readiness for surgery or TACE
- How often liver blood tests are repeated
Protecting the family
Hepatitis B often runs in households. A positive result is a reason to test a spouse, children and siblings, and to vaccinate those who are not protected.
Not sure whether this applies to you?
Ask an oncologistOn your report
Which hepatitis tests are done, and what does each mean?
- HBsAg
- Hepatitis B surface antigen. Positive means hepatitis B virus is in the body now. This is the main screening test.
- Anti-HBc
- Antibody to the hepatitis B core. Positive means you met hepatitis B at some point, even if HBsAg is negative. It matters for reactivation risk.
- Anti-HBs
- Protective antibody, from vaccination or from clearing an old infection.
- HBV DNA
- The viral load. It shows how actively the hepatitis B virus is copying itself. See reading a hepatitis B report.
- Anti-HCV
- Hepatitis C antibody. Positive means you were exposed at some point. It stays positive even after the virus is gone.
- HCV RNA
- Checks whether hepatitis C virus is present now. A positive antibody with a negative RNA usually means a past infection that has cleared.
Step by step
What happens if a hepatitis test comes back positive?
Follow-up tests are added
A positive screening test leads to the more detailed tests above, such as viral load. Sometimes a hepatitis D test is added for people with hepatitis B.
A liver specialist joins the plan
Antiviral decisions belong to a hepatologist or physician. CION coordinates this with partner hepatologists, so the antiviral plan and the cancer plan are agreed together.
Antivirals are started where needed
Hepatitis B tablets keep the virus controlled. They do not remove it, so they are usually taken long term. Hepatitis C can now be cleared with a course of tablets, even when cancer is present. See hepatitis C treatment with liver cancer.
Cancer treatment goes ahead with monitoring
In most cases cancer treatment is not delayed. Liver blood tests and sometimes viral load are rechecked during treatment, to catch a flare early.
Family members are offered testing
Testing and vaccination for the household is encouraged, without blame. See should my family be tested.
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Commonly believed
What do families believe about hepatitis tests that is not true?
"I was tested negative years ago, so there is no need."
An old test may have checked only one marker, or the situation may have changed. Testing at diagnosis uses a fuller panel, including anti-HBc, which an older screening test often left out.
"A positive test means someone did something shameful."
Hepatitis B is most often passed from mother to baby at birth, or between young children. Hepatitis C has often come from old injections or transfusions. A result says nothing about a person's character.
"The cancer is the real problem, so the virus can wait."
Leaving an active virus untreated can damage the liver further and can cause a dangerous flare during cancer treatment. The two are managed together.
"Once I start hepatitis B tablets, I can stop when I feel well."
Hepatitis B is controlled, not cleared, by tablets. Stopping without your liver doctor's advice can trigger a severe flare. Read why stopping is risky.
Being straight with you
What can this page not tell you?
It cannot read your report for you. The same marker can mean different things depending on the other results beside it, your liver function and your treatment plan. A hepatologist or your oncologist should explain what your combination means, and whether antiviral tablets are needed.
Who this does not apply to in the same way
If all your hepatitis tests are negative, the infection question is closed for now and your treatment is planned on the tumour and the liver alone. If your liver cancer came from fatty liver, alcohol or another cause, the test still matters, because hepatitis can sit alongside them without symptoms. If you are having immunotherapy, there are extra considerations, covered on hepatitis and immunotherapy.
It cannot tell you how long you have had the infection
Most people never find out when they were infected, and it rarely changes what happens next. Spending energy on who passed it to whom helps nobody. Testing and protecting the people around you does.
Bring every old hepatitis report you can find, even from years ago. Trends help the team.Questions we are asked
Common questions about hepatitis testing at diagnosis
Is hepatitis testing really done for every liver cancer patient?
Yes. Guidelines recommend checking for hepatitis B and C in everyone with liver cancer, whatever the suspected cause. The result affects liver care, treatment safety and the family, so it is worth doing even if you feel sure you are negative.
Is it just a blood test?
Yes. All the screening tests and the viral load tests are done on a blood sample, usually drawn along with your other blood tests. No special preparation is normally needed. Your team will tell you if anything different applies.
Will a positive result delay my cancer treatment?
Usually not by much. Antiviral tablets can often be started alongside planning, and treatment goes ahead with closer blood test monitoring. In a few cases the team may want the liver more settled first. They will explain why if so.
Can hepatitis B go away completely?
No. Modern tablets keep hepatitis B well controlled, which protects the liver and lowers the chance of a flare during treatment. They are usually taken long term. Hepatitis C is different. It is curable with a course of tablets in most people.
My anti-HBc is positive but HBsAg is negative. Does that matter?
It can. It means you met hepatitis B in the past. The virus can still hide in the liver and, rarely, wake up during strong treatment. Your team may check your viral load or monitor more closely. See reactivation during cancer treatment.
Should my children and spouse be tested?
If you have hepatitis B, yes. Close household members should be tested and, if not protected, vaccinated. If you have hepatitis C, testing is advised for anyone who may have shared blood exposure. This is protection, not blame.
Who prescribes the antiviral medicine?
A hepatologist or physician makes the antiviral decision. CION coordinates with partner hepatologists so that the antiviral plan fits your cancer treatment. Do not start or stop hepatitis tablets on your own.
Does my employer need to know my result?
This is general information, not legal advice. A hepatitis result is private medical information, and most jobs do not need it disclosed. For specific questions about your workplace, ask your employer's medical officer or a legal adviser.
Your Specialists
Meet CION's liver cancer specialists. Bring your scan reports and liver blood tests.
Our medical and surgical oncologists plan liver cancer care together, weighing the tumour and how well your liver works before choosing surgery, a liver-directed procedure or medicines.
Medical Oncologist
Dr. C. Raghavendra Reddy
MBBS(Gold Medal), DNB(General Medicine), DM(Medical Oncology)(Gold Medal)
Medical Oncologist
Dr. Bharati Devi Gorantla
MBBS, MD(General Medicine), DM(Medical Oncology)(Adyar,Chennai), ECMO, MRCP SCE(UK)
Medical Oncologist
Dr. Owais Mohammed
MBBS, MD (General Medicine), DrNB (Medical Oncology), ECMO, MRCP SCE (Medical Oncology) (UK)
Medical Oncologist
Medical Oncologist
Surgical Oncologist
Dr. Muralidhar Muddusetty
MBBS (AIIMS), MS (Surgery) (AIIMS), DNB (Surgical Oncology), MRCS (Edinburgh)
Surgical Oncologist
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Sources
- EASL — EASL Clinical Practice Guidelines: management of hepatocellular carcinoma
- American Cancer Society — Diagnosing Liver Cancer
- NHS — Hepatitis B
- NHS — Hepatitis C
This page is general information, not a prescription. Do not change or stop any treatment based on what you read here. If anything is worrying you, contact your own treating team — or call our helpline and we will help you reach the right specialist.
Keep reading
Related pages
Reading a hepatitis B reportHBsAg, HBeAg, anti-HBs and anti-HBc in plain wordsHepatitis B reactivation during cancer treatmentWhy antiviral protection is started before treatmentShould my family be tested for hepatitis B?Who to test and vaccinate at homeBlood tests in liver cancerThe other tests done at diagnosis
Talk to us
Confused by a hepatitis result on top of a cancer diagnosis?
Bring your reports and we will help you understand what they mean for the treatment plan, with a partner hepatologist where needed. One helpline serves every CION centre.