Hematologist
CION Cancer Clinics
Arranging blood and platelet donors for your relative | CION Cancer Clinics
When the hospital asks your family to arrange blood or platelet donors, it is usually asking you to refill the blood bank's stock, not to find blood before treatment can start. An urgent transfusion is given from what is available. Your job is to line up fit donors, send them with the right details, and tell the team early if you cannot find enough. This page walks you through it. At CION Cancer Clinics, our haematology team supports patients and families through treatment, cost questions and life at home.
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Medically reviewed by Dr. Basudev PokhrelConsultant Haematologist · last reviewed September 2026, next review due September 2027
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On this page
- Why is your family being asked to find donors?
- Which kind of donation is the team asking for?
- How do you arrange donors without panic?
- What do families believe about donating, and what is true?
- Who is likely to be asked to wait?
- What can this page not tell you?
- Common questions about arranging blood and platelet donors
The short answer
Why is your family being asked to find donors?
You are being asked because the blood bank needs to put back what your relative's treatment will use. The platelets or blood they receive usually come from the bank's stock first. Donors from your family and friends refill that stock, so the next patient is not left waiting.
Why platelets are asked for so often
Platelets are the cells that help blood clot. Treatment for leukaemia, lymphoma and other blood disorders can stop the bone marrow making enough of them for a while. Unlike red cells, platelets can be stored for only a few days, so blood banks cannot build up a large reserve. That is why the request can come again and again during a long admission.
What the request does not mean
It does not mean the hospital has run out. It does not mean your relative will be refused a transfusion if you cannot find anyone in time. A transfusion that is needed today is given from what is available. The donor request is about keeping the supply going for the days ahead.
Ask the ward or blood bank for the request in writing: which product, how many donors, and by when. It saves many phone calls.Know what to ask for
Which kind of donation is the team asking for?
The words on the request slip change who can help and how long each donor will spend at the blood bank.
Whole blood
An ordinary blood donation from the arm. The bank separates it into red cells, plasma and a small amount of platelets. Most healthy adults can give this, and it takes well under an hour including the checks.
Random donor platelets
Platelets taken from several whole blood donations and given together. You may see this written as RDP. It needs more donors, but each one simply gives an ordinary donation.
Single donor platelets
One donor is connected to a machine that keeps the platelets and returns the rest of the blood. You may see it written as SDP or apheresis. It takes longer, and the donor has extra checks first.
Often asked for when
- Many transfusions are expected
- Earlier platelets did not raise the count well
Matched platelets
Sometimes a donor has to be tested for a close match to the patient. This is arranged through the blood bank that does the testing, not by the family alone. Ask the team which centre handles it.
Not sure whether this applies to you?
Ask an oncologistStep by step
How do you arrange donors without panic?
Get the details right
Note the patient's name, hospital registration number, blood group, the product needed, and the blood bank's address and timings. Donors are often turned away because one of these was missing.
Build a list, not one name
Ask relatives, colleagues, college groups, your housing society and your place of worship. Keep a shared list with each person's blood group and the date they last donated. Line up more people than you think you need, because some will be asked to wait at the check.
Use organised donor groups
Government blood banks, the Red Cross and registered voluntary donor groups can help. The national e-RaktKosh portal lists blood banks and their stock. Never pay a stranger who offers to donate for money.
Send donors ready
Ask each donor to eat a proper meal, drink water, sleep well the night before and carry a photo ID. They should tell the blood bank about every medicine they take, including painkillers.
Commonly believed
What do families believe about donating, and what is true?
"The donor must have the same blood group as the patient."
Not always. A donor of any group who is fit to give helps refill the bank's stock. The bank then gives your relative the product that suits their group. Ask the blood bank before turning a willing donor away.
"Giving blood makes the donor weak for weeks."
A healthy donor's body replaces the fluid quickly and the cells over the following weeks. Most people go back to normal work the same day. They should avoid heavy exercise and long hours in the sun for the rest of that day.
"Family blood is always safer than a stranger's."
Every donation is tested the same way, whoever gives it. Blood from close relatives can even need special handling, such as irradiation, a treatment that stops donor white cells attacking the patient. The bank decides this, not the family.
"If we cannot find donors, treatment will stop."
An urgent transfusion is not held back while donors are found. Tell the team early if you are struggling. They can point you to donor groups and plan ahead with the blood bank.
Before they travel
Who is likely to be asked to wait?
If the donor has
What usually happens
A fever, cold or recent infection
Asked to come back once fully well
Taken aspirin or a similar painkiller recently
May still give blood, but often not platelets
A recent tattoo, piercing or surgery
Usually asked to wait for some months
Pregnancy, recent childbirth or low haemoglobin
Not accepted this time
A brother or sister who may be tested as a stem cell donor
Ask the haematologist before they give blood for the patient
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Do not wait for donors if this happens
If your relative has bleeding that does not stop with firm pressure, vomits or coughs up blood, passes black stools, has a sudden severe headache or becomes confused, go to the nearest emergency department now or call 108. Say they have a blood cancer and a low platelet count. Arranging donors can carry on alongside. It must never delay getting them seen.
Being straight with you
What can this page not tell you?
This page cannot tell you how many donors your relative will need, or for how long. That depends on the treatment, how quickly the bone marrow recovers and how well each transfusion works. The treating team sets the plan and changes it as the counts change.
When transfusions stop working as well
Some people who receive many platelet transfusions stop getting a good rise in their count. The team may then ask for single donor or matched platelets. If you notice the requests changing in this way, ask what the blood tests are showing and which blood bank will do any matching.
How CION helps
CION's haematology team reviews the case, discusses it at a tumour board and coordinates transfusion support with qualified blood banks and treatment centres. We do not run a blood bank ourselves. We can help you understand the request slip, plan ahead and know which questions to ask.
Look after the person making the calls
Donor hunting usually falls on one son or daughter. Share the list with two or three others so no one carries it alone, and keep one person free to sit with the patient.
Questions we are asked
Common questions about arranging blood and platelet donors
Can a donor with a different blood group still help?
Often yes. For a replacement donation, any fit donor refills the bank's stock, and the bank issues the right group to your relative. For single donor platelets the bank may prefer a matching or compatible group. Call the blood bank with the patient's group and ask what they accept before donors set out.
Should we pay someone to donate?
No. Paid donation is not allowed in India, and a person donating for money may hide an illness that makes the blood unsafe. Use family, friends, colleagues, registered voluntary donor groups, the Red Cross and government blood banks. If anyone asks for money to supply donors, tell the hospital staff.
How long does a platelet donation take?
An ordinary whole blood donation, including the form and checks, usually takes well under an hour. A single donor platelet collection on a machine takes longer, often a couple of hours with the checks. Ask the blood bank for its timings so the donor can plan leave from work.
Can the donor give at a blood bank near their home?
Sometimes. Some blood banks accept a donation made elsewhere as credit, and many do not. Platelets for your relative still have to come from the bank linked to the treating hospital. Check with that bank before sending a donor from a district town, so the journey is not wasted.
Why was our donor turned away after coming so far?
The check before donation protects both the donor and the patient. A low haemoglobin, high blood pressure, a recent illness, a recent tattoo or certain medicines can all mean waiting. It is not a judgement on the donor. This is why a longer list of names helps.
Can a brother or sister donate platelets for the patient?
Ask the haematologist first. If a stem cell transplant may be considered later, brothers and sisters are often the first people tested as donors. Receiving their blood beforehand can sometimes cause problems. Blood from close relatives also needs special handling at the bank.
Does the patient pay for the blood products?
Donated blood is not sold, but blood banks usually charge for testing and processing. Aarogyasri, PM-JAY, CGHS, ECHS, EHS and cashless insurance may cover this as part of treatment. Scheme rules change, so check the current position with the hospital billing desk and your scheme or insurer.
What should the donor do after donating?
Rest for a few minutes, have the drink and snack offered, and drink plenty of fluids that day. Avoid heavy lifting, exercise and long drives straight after. If they feel faint, they should lie down with legs raised. Anything that does not settle should be reported to the blood bank.
Your Haematologist
Meet CION's haematologist. One specialist for your blood report and your plan.
Dr. Basudev Pokhrel reviews blood counts, transfusion needs and blood disorders, and works with the CION tumour board on blood cancers.
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Sources
- World Health Organization — Blood safety and availability
- NHS — Blood transfusion
- National Heart, Lung, and Blood Institute — Blood transfusion
- American Cancer Society — Blood transfusion and donation
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
When a Platelet Transfusion Is GivenWhy the team decides platelets are neededPlatelet RefractorinessWhen platelet transfusions stop raising the countIrradiated and Leucodepleted Blood ProductsThe special handling some blood needsBleeding That Will Not Stop: What to DoWhat to do in a bleeding emergency
Talk to us
Confused by a donor request slip?
Share the slip and the latest blood count. Our haematology team will explain what is being asked for and help you plan the next few days.