Blood Transfusion and Blood Donation: What Changes When You Live With Diabetes

Chapter 27 · Vihang Rahul Vasa

A blood transfusion means blood taken from one person, the donor, is stored in a blood bank and later given through a drip to another person who needs it: the recipient. There are things a person living with diabetes needs to know on both sides. Diabetes does not by itself stop you from being a donor or a recipient, but the rules and the checks are different.

These are India’s rules. Blood donation in India is governed by the national guidelines for blood donor selection issued under the Ministry of Health and Family Welfare, and every licensed blood bank applies them. Other countries, the USA, the UK and others, have their own rules, made by their own blood services under their own laws, and they differ from India’s on several points, including diabetes. The guidelines are revised from time to time; the blood bank’s current rule always prevails over anything written here.

Who can donate. If your Type 2 Diabetes is well controlled with diet or tablets, and you have no complications of the kidneys, nerves, eyes or heart, the Indian guideline allows you to be considered as a donor: once both doctors agree: the doctor who manages your diabetes, and the doctor at the blood bank, who has the final word.

Who is not accepted. Under the Indian guideline, a person whose diabetes is not under control is not accepted: you should not offer, because it is not safe for you or for the recipient. A person who takes insulin is not accepted. A person with diabetes complications, kidney, nerve, eye or heart disease, is not accepted. The general rules apply to everyone as well: age, weight, low haemoglobin, a recent illness or fever, or a recent change of medicines can each mean “not today”. For the newer injectable diabetes medicines, the current Indian guideline is silent: carry your prescription, tell the doctor at the blood bank, and let the blood bank decide.

When you donate. Never hide your diabetes or your medicines to be allowed in; the honest answer protects you and the person who will receive your blood. The amount taken and the gap between donations are set by the blood bank under the guideline: by your weight and your last donation date, the same as for everyone. Eat normally before donating, drink water, and if you feel weak or shaky afterwards, treat it as hypoglycaemia, a low plasma glucose (blood sugar) episode (see Chapter 25), and rest.

Does diabetes pass through blood? No. Diabetes is a condition of the body, not an infection, and it cannot pass from donor to recipient. The infections that can pass through blood, HIV (Human Immunodeficiency Virus), hepatitis B and C, syphilis, malaria and other blood-transmitted diseases, are a separate matter, and every unit of blood in a licensed Indian blood bank is tested for them before it is given, as the law requires. That is why you should only ever receive blood from a licensed blood bank.

If the donor has diabetes. If the blood you receive came from a person with well-controlled diabetes, their diabetes does not come with it. The blood bank has already tested that unit, as it tests every unit.

If you are the recipient. If you ever need blood, after an accident, during surgery, or in a serious illness, tell the treating team that you live with diabetes. They will watch your plasma glucose (blood sugar) during and after the transfusion. And tell the doctor who manages your diabetes as well, because for some time after a transfusion your HbA1c (glycated haemoglobin) test may not be reliable, it is also reading the donor’s red cells, and your doctor will tell you how long to wait before the next one.

Illustration: Sample medical emergency card for a person living with Type 2 Diabetes

Sample emergency card Sample Medical Emergency Card. I live with Type 2 Diabetes. Name: Vihang Rahul VASA. Blood group: B+. Allergy, personal and emergency numbers, address, medicines, and insulin type and frequency are placeholders to complete. The printed instruction reads: “If I am unconscious or confused: do not give me anything by mouth. Call the emergency number above, or 112 / 108.” This is the manuscript’s sample, not a completed medication record.

Sample card: for educational purposes only. The medicines and blood group shown are placeholders and do not represent the author’s own details.

Carry a card. Keep a small card in your wallet, or a note behind your phone, that says your name, your blood group, “I live with Type 2 Diabetes”, your medicines, and one emergency phone number. If you are ever unconscious after an accident, that card speaks for you: the doctors treating you will know what your body is dealing with before your family arrives.

Whether you are giving blood or receiving it, the rule is the same one this book repeats on every page: tell the doctor you live with diabetes, and let the doctor decide.

(References for this chapter, blood donor selection guidelines in India, and the UK and US positions on donors with diabetes, are listed in Appendix B.)

Illustration: Chapter 27 illustrated summary. Giving and receiving blood are distinguished.

Chapter 27 Giving and receiving blood are distinguished. Donation eligibility is decided by the treating doctor and blood-bank doctor under current Indian rules. Transfusion requires plasma glucose monitoring; HbA1c (Glycated Haemoglobin), may be unreliable afterwards.

Chapter at a glance: an AI-generated illustration to be read with the chapter, not instead of it. The people shown are not real.