Transfusion reactions: recognise them and speak up
Transfusion is a safe procedure, but reactions are possible, from mild itching to rare serious events. Staff watch closely, especially in the first minutes, and your words are the fastest signal.

01Short answer
02Simple explanation
Feel unwell: speak up at once.
Staff stop it.
Remember the reaction.
Next time: tell them.
03Scientific explanation
MedlinePlus: signs of a transfusion reaction include fever, chills, back pain, breathlessness and dark urine; if one is suspected, the transfusion is stopped at once.
NCI: chemotherapy can lower neutrophils, platelets and red cells, which raises the risk of infection, bleeding and fatigue.
04What happens in the body?
Types
Allergic, febrile, haemolytic and fluid overload.
Checks
The bag and a blood sample are checked again.
Neutrophils
The first defence against infection; when they are low, hygiene matters most.
Platelets
Help blood clot; when they are low, protect yourself from injury.
05Daily protection: four steps
Wash, protect, check, report.







06Key points at a glance
| Topic | In brief |
|---|---|
Types | Allergic, febrile, haemolytic and fluid overload. |
Checks | The bag and a blood sample are checked again. |
Neutrophils | The first defence against infection; when they are low, hygiene matters most. |
Platelets | Help blood clot; when they are low, protect yourself from injury. |
07Key terms
- Febrile reaction
- A temperature during a transfusion.
- Anaphylaxis
- A severe allergic reaction.
- ANC
- Absolute neutrophil count.
- Thrombocytopenia
- A low platelet count.
08Key points
- Notice.
- Speak up.
- Remember.
- Wash your hands.
- 38 °C: call.
09Frequently asked questions
I had one reaction; will it happen again?
Not necessarily; your team can plan precautions.
I do not want to bother anyone.
That is exactly why staff are there; tell them.
What should I watch every day?
Temperature, bleeding, tiredness and the catheter site; tell your team about any change.
10Questions for your doctor
Take these questions to your appointment. The ones you save are collected on the “My questions” page and stay on this device only.
I had one reaction; will it happen again?
I do not want to bother anyone.
What should I watch every day?
12Sources
- MedlinePlus. Blood transfusions
- MedlinePlus. Hemolytic transfusion reaction
- National Cancer Institute. Infection and Neutropenia during Cancer Treatment
- National Cancer Institute. Bleeding and Bruising (Thrombocytopenia) and Cancer Treatment
- National Cancer Institute. Anemia and Cancer Treatment
- World Health Organization. World Hand Hygiene Day
- Centers for Disease Control and Prevention (CDC). People at Increased Risk for Illness from Animals
- Centers for Disease Control and Prevention (CDC). Aspergillosis Basics
- Journal of Clinical Oncology (ASCO and IDSA), 2018. Antimicrobial Prophylaxis for Adult Patients With Cancer-Related Immunosuppression: ASCO and IDSA Clinical Practice Guideline Update
- Biology of Blood and Marrow Transplantation, 2009. Guidelines for preventing infectious complications among hematopoietic cell transplantation recipients: a global perspective
Types
Checks
Neutrophils
Platelets