Arranging Platelet Donors — When the Need Is Urgent
Finding a platelet donor in India is harder and faster to do wrong than finding a blood donor. Apheresis donors give a full adult dose in one sitting — but they must meet specific criteria, and the process starts at your hospital blood bank, not with a WhatsApp broadcast.
Medically reviewed by Dr. C. Raghavendra Reddy, Medical Oncologist, MBBS (Gold Medal) · DNB · DM (Medical Oncology, Gold Medal) · Last reviewed September 2026
- Apheresis is not the same as blood donation — One apheresis donor gives a full platelet dose. Random blood donors each give a small fraction, needing four to six units to match one apheresis donation.
- Your blood bank coordinates it — Start with the hospital blood bank. They will tell you whether you need group-specific or HLA-matched donors, and how many.
- Donors must pass screening — A donor turned away on the day wastes critical time. Share the eligibility criteria before they travel.
- Voluntary donor networks exist — Registered organisations across India can reach potential donors faster than a single family's contact list.
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Apheresis platelet donors are different from ordinary blood donors — one donor gives a full adult dose in a single sitting, and the machine returns their red cells. In India, start with your hospital blood bank, then contact your State Blood Transfusion Council or a voluntary donor network such as Sankalp India Foundation.
If a symptom below applies to you, do not wait for a callback. Call 1800-202-8726 or go to your nearest emergency department.
How do you arrange an apheresis platelet donor in India?
- Call your hospital blood bank firstThey will confirm the blood group required, how many units are needed, and whether HLA matching applies.
- Ask for the blood bank's voluntary donor registryMost NBTC-registered blood banks maintain donor lists and can contact volunteers on your behalf.
- Contact your State Blood Transfusion CouncilEach state's SBTC coordinates donors across registered blood banks and can redirect you if local supply is short.
- Reach a voluntary donor organisationOrganisations such as Sankalp India Foundation have networks of trained voluntary donors across major Indian cities.
- Post in verified city-specific platelet donor groupsFacebook and WhatsApp groups can reach volunteers quickly — share the eligibility criteria first so ineligible donors do not travel.
- Confirm basic eligibility before the donor travelsAsk about recent illness, medications, and last donation date over the phone. A rejected donor on the day delays the transfusion.
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Does your potential donor qualify for apheresis?
| Criterion | Likely eligible | Likely ineligible — confirm with blood bank |
|---|---|---|
| Age | Adult, within the age range the blood bank accepts | Under 18; above the upper age limit the blood bank sets |
| Weight | At or above the minimum weight the blood bank requires | Below the minimum weight threshold |
| Recent illness | No illness, fever, or infection in the past two weeks | Current cold, fever, or active infection of any kind |
| Medications | No blood thinners or anti-inflammatory painkillers taken recently | Taking aspirin, ibuprofen, or any anticoagulant — platelet function may be affected |
| Recent donation | Outside the minimum rest interval since last platelet or blood donation | Donated whole blood or platelets within the required rest period |
| Haemoglobin | Above the minimum level the blood bank requires | Anaemic — haemoglobin below the blood bank's required threshold |
What is apheresis and why does it matter for cancer patients?
Apheresis is a machine-assisted process. The donor sits for roughly 60 to 90 minutes while a machine withdraws blood, separates the platelets, and returns the red cells and plasma. One apheresis donation yields a full therapeutic platelet dose for one adult.
Conventional whole blood donation gives only a small fraction of that. Reaching a similar dose from whole blood requires four to six separate donors, multiplying both the number of people needed and the infection-screening burden.
For cancer patients who have received many transfusions, the immune system sometimes stops responding to standard platelets. The oncologist may then request HLA-matched donors — a closer cellular match sourced through specialised registries. This takes longer to arrange, so ask your oncologist early if it might apply. Never give a donor aspirin, ibuprofen, or other anti-inflammatory painkillers before donation — these affect platelet function and can render the donation unusable.
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Frequently asked questions
Is apheresis donation safe for the donor?
Yes. The machine uses a closed, sterile circuit — the donor's blood never contacts equipment that has touched another person. Donors may notice mild fatigue or tingling from a calcium-binding agent used in the process; blood bank staff monitor and manage this during the session. The red cells and plasma are returned to the donor, so recovery is generally quicker than after whole blood donation. Most voluntary donors donate multiple times without difficulty.
Does the platelet donor have to be the same blood group?
ABO-compatible donors are preferred, and your blood bank will specify which groups are acceptable. In urgent situations some blood banks use group-compatible platelets that are not an exact match. For patients who are no longer responding to standard platelet transfusions, the oncologist may request HLA-matched donors — a more precise match arranged through specialised registries. Ask the blood bank team which situation applies to your patient, so you search for the right kind of donor from the start.
Can a family member donate platelets by apheresis?
Yes, provided they meet the eligibility criteria. Directed donation from family members is accepted at most registered blood banks in India and is common practice. The donor must go through the same health screening as any voluntary donor. If your patient is receiving or has received a stem cell transplant, ask the treating oncologist before arranging a family member as donor — in some situations, donation from a specific family member may be advised against.
How long does it take to arrange an apheresis platelet donor?
A registered voluntary donor already in the blood bank's pool can sometimes be called the same day. Arranging an HLA-matched donor takes longer and may require several days. Starting the search before the platelet count reaches a critical level gives the blood bank more time and more options. Contact the blood bank as soon as the oncology team says a transfusion is likely, rather than waiting until the situation becomes urgent.
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