Donating blood is a safe and easy procedure that can help save lives. Here is information on what to expect when you donate blood, courtesy the American Red Cross: Health Tips * You’ll have a mini-physical examination, where your blood pressure, pulse and temperature will be checked. You will also be asked questions about your lifestyle and health. * The injection site on your arm will be sterilised, then a sterile needle will be inserted. Some minor stinging or discomfort is common when the needle enters the skin. * It takes about 10 minutes to collect a pint of blood. * You may need to lie still for a few minutes after the donation, and have a snack or a drink. * You’ll be given a form with follow-up instructions and a phone number to call in case you realise that your blood may not be safe to give to another person. * A small number of donors may experience dizziness, fatigue or bruising at the injection site.