Medical Oncologist
CION Cancer Clinics
What to do when no affected relative is alive to test | CION Cancer Clinics
Testing is still possible even after the relative who had cancer has died. A stored tissue block from their old surgery or biopsy can sometimes be tested directly. When no sample exists, a healthy relative can still be tested, though the result is harder to interpret. This page explains both routes. At CION Cancer Clinics in Hyderabad, our oncologists review your family history with you and guide you to the right genetic counselling and testing.
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Medically reviewed by Dr. Naresh GunduConsultant Medical Oncologist · MBBS, DNB (Internal Medicine), DM (Medical Oncology, AIIMS) · last reviewed September 2026, next review due September 2027
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On this page
- What if the relative who had cancer has already died?
- What can actually be tried when no affected relative is alive
- How do you actually track down a stored sample?
- Terms you may hear in this situation
- Testing a stored sample vs testing a living relative
- What families assume once a relative has died
- What this page cannot tell you
- Common questions when no affected relative is alive
The short answer
What if the relative who had cancer has already died?
Testing is still possible, but it takes a different route. The two main options are testing a stored sample from that relative if one exists, or testing a healthy relative directly with a broader panel, knowing the result will be harder to interpret than it would have been.
Why a stored sample is worth chasing first
Many hospitals keep tissue blocks from old biopsies or surgeries for years, sometimes decades, even after a patient has died. If that block still exists, it can sometimes be tested, giving the family the same clear anchor result they would have had if the relative were alive.
When no sample exists anywhere
If nothing was kept, a counsellor will usually offer a full panel test to the closest healthy relative instead, most often a child or sibling of the person who died. It is a real option, just a less precise one, and the counsellor will be honest about that trade-off before you proceed. In practice this is the more common situation, since many older hospital archives were never built with genetic testing in mind.
A relative's death does not close the door on testing. It changes which door you use.The realistic options
What can actually be tried when no affected relative is alive
A counsellor will usually work through these in order, starting with whichever is most likely to give a clear answer.
A stored tissue block
If the hospital that treated the relative still holds a sample from their surgery or biopsy, it can often be retrieved and tested directly, even years later.
Old medical records
Detailed pathology reports, even without a physical sample, help a counsellor judge how likely an inherited cause is and which genes to prioritise if a living relative is tested instead.
The closest living relative
A child, sibling or parent of the person who died shares the most genetic material with them and is usually the best candidate for a broader panel test.
Family history alone
Where no sample and no detailed records exist, a counsellor can still assess risk from the pattern of illness in the family and recommend appropriate screening without a genetic result.
Not sure whether this applies to you?
Ask an oncologistIn practice
How do you actually track down a stored sample?
Identify the treating hospital
Start with wherever the relative had their surgery or biopsy done, even if it closed or changed name. Records departments can often still trace old files.
Request the pathology archive
Ask specifically for the tissue block from the original diagnosis, not just the written report. The physical block is what a laboratory needs to test.
Have it sent for genetic testing
Once located, the block is sent to a genetics laboratory rather than tested at the original hospital. This can take longer than a blood test, so ask for a realistic timeline.
Have a counsellor ready to interpret it
A result from old tissue can be more complex to read than a fresh blood sample. Arrange counselling support before the result comes back, not after.
On this topic
Terms you may hear in this situation
- Tissue block
- A preserved sample from a biopsy or surgery, stored by the hospital pathology department, sometimes for many years.
- Obligate carrier
- Someone who, based on the family tree alone, must carry a fault even without being tested directly, because of who their parents and children are.
- Empiric risk
- Risk estimated from the pattern of illness in a family, used when no genetic test result is available to rely on.
- Archived pathology report
- The original written diagnosis, which helps a counsellor judge how likely an inherited cause is even without a sample.
- Retrospective testing
- Testing carried out on an old, stored sample rather than a fresh one taken today.
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Side by side
Testing a stored sample vs testing a living relative
Stored sample from the relative who died
Broader panel on a living relative instead
Gives the clearest possible family anchor
Result is harder to interpret without an anchor
Depends on the hospital still holding the block
Depends on a living relative agreeing to test
Can take longer to retrieve and process
Usually faster to arrange
One test can answer for the whole family
May need more than one relative tested
Commonly believed
What families assume once a relative has died
"Once someone has died, there is nothing left to test."
Hospitals often keep tissue blocks from old surgeries for years. Whether a usable sample survives is worth checking before assuming there is nothing to work with.
"If we cannot test them, we will never know for sure."
A broader test on a living relative, alongside a careful review of old medical records, can still give a useful, though less precise, answer.
"Testing a sibling instead is exactly the same as testing the relative who died."
It is not identical. A sibling's result can be informative, but it answers a slightly different question, and a counsellor will explain that difference clearly before you proceed.
"The hospital will refuse to release an old sample."
Many hospitals will release archived tissue for genetic testing with the right consent from next of kin. It takes paperwork and patience, not a special exception.
Being straight with you
What this page cannot tell you
It cannot tell you whether a usable sample from your relative still exists. That depends entirely on which hospital treated them, how long ago, and that hospital's own record-keeping, which a counsellor can help you chase up.
It cannot promise a stored sample will give a clean answer
Older samples do not always yield a usable result, even when found, because tissue can degrade over time. A counsellor will tell you honestly whether it is worth attempting before you spend time and money chasing it, and will suggest a parallel plan involving a living relative so the family is not left waiting on one uncertain lead alone.
Who this does not apply to
If the relative who had cancer is still alive, read the page on testing an affected relative first instead. This route is specifically for families where that option is no longer available.
Bring whatever records you already have, even incomplete ones, to your first counselling appointment. They are more useful than most families realise.Questions we are asked
Common questions when no affected relative is alive
How do I find out if a tissue block still exists?
Contact the pathology or records department of the hospital that treated your relative and ask specifically about archived tissue blocks from their case. A genetic counsellor can help you word this request correctly.
What if the hospital has closed down?
Records and archived samples are sometimes transferred to a successor institution or a regional archive. It is worth asking your state health department where such records are typically routed.
Is testing a sibling as good as testing the person who died?
It is a reasonable alternative, but the result is read differently. A counsellor will explain what a positive or negative result in a sibling can and cannot tell the rest of the family.
Can old written reports alone be enough to guide us?
Detailed pathology reports help a counsellor judge how likely an inherited cause is, even without a sample, and can guide which genes to prioritise if a living relative is tested.
How long does retrieving an old sample usually take?
It varies widely depending on the hospital's archive system, and can take anywhere from a few weeks to considerably longer. Ask for a realistic estimate before committing to the search.
Do we need permission from other family members to test an old sample?
Consent from next of kin is usually required to release and test an archived sample. A counsellor can advise exactly whose consent is needed in your specific situation.
What if the sample is found but too degraded to test?
The laboratory will usually attempt it and report back if the sample cannot yield a reliable result. At that point, testing a living relative becomes the next realistic option.
Where should we start?
Call the CION helpline with whatever information you have about the relative's diagnosis and treating hospital. A counsellor will help you work out the most promising route forward.
Your Specialists
Meet CION's oncologists. Bring your family history or genetic report to them.
Our medical oncologists see people with a strong family history of cancer, arrange genetic counselling and testing where it fits, and plan the checks that follow.
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
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Sources
- National Cancer Institute — Genetic Testing for Inherited Cancer Susceptibility Syndromes
- GeneReviews (NCBI) — Genetic Counseling
- Cancer Research UK — Inherited cancer genes and increased cancer risk
- MedlinePlus Genetics — What does it mean to have a genetic predisposition to a disease?
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
Testing an affected relative firstWhy this is the preferred route when it is possibleBuilding your family tree before the appointmentHow to gather what records you do haveVerifying family cancer history with recordsHow old records get confirmed and usedWhat a genetic counsellor doesWho helps you weigh these options
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Not sure where to even start looking?
Tell us which hospital treated your relative and what you know about their diagnosis. We will help you work out the most realistic next step. One helpline serves every CION centre.