When Your Doctor Recommends a Blood Transfusion: What to Discuss, How to Check Your Identity, and How to Report Symptoms

When your doctor recommends a blood transfusion, first ask what problem it is intended to address, which blood component is recommended, what benefits and risks to expect, and whether other options are suitable for you. Tell the team about any previous transfusion reactions and known antibodies. If you develop any new symptoms during the transfusion, call staff immediately. If you develop emergency symptoms after leaving hospital, such as severe difficulty breathing, chest pain, or swelling of the mouth or throat, call local emergency services immediately and tell them you recently had a transfusion.[1][2]

Key Points

• Red blood cells, platelets, and plasma have different uses. Ask your doctor to explain which component is recommended and why. Do not decide for yourself whether you need a transfusion based on a single test result.[2]
• Infection screening and checks that blood is compatible with a patient address different issues. Before a transfusion, you still need blood sampling, identity checks, and any applicable compatibility testing under the hospital’s procedures.[1]
• Tell the team if you have had a transfusion reaction, have known antibodies, or have a history of transfusion, pregnancy, or transplantation. Previous reports cannot replace the tests needed this time.[1][5]
• If you suddenly feel unwell during a transfusion, call staff immediately. Do not remove the needle or adjust the transfusion yourself.[1]

Discuss This Transfusion with Your Doctor First

Ask the doctor responsible for your care to explain what problem needs treatment, which blood component they recommend, what effect they expect, the important risks, and whether any alternatives are suitable for you and have time to work. You can also ask: What could happen if I wait or do not have the transfusion? Is there time to think or ask more questions?[1]

Red blood cells help carry oxygen. Platelets and plasma may be used in different situations to treat bleeding or problems with blood clotting. Your doctor will consider your condition, symptoms, and test results; you cannot decide for yourself based on a single test value.[2] Blood undergoes screening and compatibility testing, but reactions or other complications can still occur. Ask your doctor to explain the risks relevant to you. Do not treat risk figures from another country as your personal risk at this hospital.[1][2]

If you have concerns about a particular component or treatment, tell your doctor about each one and ask them to explain feasible alternatives, their limitations, and arrangements for emergencies. Request an interpreter early if you need one. The doctor answers medical questions; the interpreter helps convey the information. Clinical blood use standards for healthcare institutions in mainland China include requirements for informed consent to transfusion treatment. Ask the hospital to explain how consent is recorded, who takes part in the decision, and how to obtain a copy of the record.[4] Confirm payment, coordination services, and medical consent separately. If your condition is urgent, ask the team to explain how urgent it is and what communication options are available at that moment. Do not delay emergency treatment while waiting for administrative procedures.

Check Your Identity Before Blood Sampling and Transfusion

Provide the dates of previous transfusions, your known blood group and antibodies, any transfusion reactions, your pregnancy or transplant history, and any existing reports or alert cards. The team caring for you will decide which tests are needed this time. Even if you have had a transfusion before or know your blood group, you must still follow the hospital’s current identity-checking and testing procedures.[1][5]

Before sampling and transfusion, confirm your name and the other identifying details used by the hospital as staff request. If names or dates on your wristband, sample labels, or records do not match, point this out immediately and ask staff to check before proceeding. If the patient cannot answer, an accompanying person should help provide information. Healthcare staff remain responsible for carrying out the checks according to procedure.[1]

If surgery is planned or you need special compatibility testing, ask your doctor and transfusion team in advance what information is still missing, when preparations are expected to be complete, and who will notify you and make arrangements if suitable blood is temporarily unavailable. Having an appointment does not mean blood is already ready.

What to Do If You Feel Unwell During a Transfusion

Staff will monitor you before, during, and after the transfusion. Before it starts, ask where the call bell is and whom to contact if you feel unwell.[1]

If you develop fever, chills, a rash, itching, shortness of breath, chest or back pain, dizziness, nausea, or any other sudden symptoms during the transfusion, call staff immediately, even if you are unsure whether the symptoms are related to the transfusion. Let staff assess and treat you. Do not remove the needle, stop the infusion, or adjust it yourself.[1][3]

Get Your Records and Help Contacts Before Leaving

Ask staff which symptoms require immediate emergency help and which mean you should contact the transfusion department or the doctor responsible for your care as soon as possible. Write down telephone numbers, how to get help outside working hours, and the local emergency number. If you develop fever, a rash, unusual shortness of breath, dark urine, or other new symptoms after leaving hospital, seek medical assessment promptly and give the date of your transfusion. For emergencies such as severe difficulty breathing, chest pain, or swelling of the mouth or throat, call local emergency services immediately.[3]

Ask the hospital how to obtain records of your transfusion dates, blood components, amounts, any related reactions, and any available antibody results. Give these to the team taking over your care when you return to your home country or transfer to another hospital. If results are still pending, ask who is responsible for explaining them, when you will be contacted, and how the results will be sent to your next doctor. Your treatment team will arrange any follow-up tests needed based on your situation.

Frequently Asked Questions

Does a low haemoglobin level always mean I need a transfusion?

Not necessarily. Ask your doctor to explain the decision in light of your symptoms, any bleeding, and other aspects of your condition, and whether other suitable options are available.[1][2]

If blood has been screened for infections, why do I still need a blood sample taken?

Screening and patient compatibility testing address different issues. The team needs to check your identity and decide which tests are needed based on the type of transfusion and the hospital’s procedures.[1]

I had a fever after a previous transfusion but feel better now. Do I still need to mention it?

Yes. Tell the team when it happened, what symptoms you had, what treatment you received, and about any known antibodies. Provide records or an alert card from the previous hospital if you have them. Your doctor will assess how this affects preparations for this transfusion.[1]

I am worried about having a transfusion. Can I change my mind?

Tell the doctor responsible for your care about your concerns and choices as early as possible. Ask them to explain which components are options for you, possible alternatives, the possible consequences of waiting or refusing, and how the hospital records your decision. Ask the hospital to explain the procedures for emergencies and situations where a patient cannot express their wishes, based on the specific circumstances.

If a family member has the same blood group as me, can their blood be given directly to me?

Matching blood groups alone does not establish that the blood is suitable. Blood collection, testing, preparation, and compatibility checks must be handled by institutions that meet regulatory requirements and by the medical team. Ask the transfusion department if you have questions.[1]

If I feel cold during a transfusion but the symptoms are mild, should I ring the bell?

Yes. Tell staff immediately. They need to assess the cause and decide what to do next. Do not wait until the transfusion is finished.[1]

What if I develop a fever or dark urine several days after discharge?

Contact a healthcare professional promptly and tell them the date and components of your recent transfusion. If you develop emergency symptoms such as severe difficulty breathing, chest pain, or swelling of the mouth or throat, call local emergency services immediately.[3]

I need long-term transfusions. Should I bring previous records every time?

Keep records of previous transfusions, antibodies, and reactions whenever possible, and provide them to any new team. The team caring for you will decide what further tests and records are needed. Confirm the timing of your next transfusion, arrangements during travel, and who will continue your care after you return to your home country with the teams in both locations in advance.[1]

Sources

Date checked: November 6, 2026. The clinical references below do not mean that all hospitals follow the same procedures. The team caring for you will confirm your individual arrangements.

1. UK NHS Blood and Transplant: Transfusion FAQs
2. US National Heart, Lung, and Blood Institute: Treatments for Blood Disorders
3. UK NHS: Blood Transfusion
4. National Health Commission of China: Technical Standards for Clinical Blood Use (2025 Edition)
5. National Health Commission of China: Standard for Transfusion Compatibility Testing: The clinical and transfusion teams apply the requirements for relevant medical history and compatibility testing according to the circumstances of this transfusion.