Did you know you can start donating blood when you are 16? From beginning to end the process takes about an hour. All you need is a picture ID and a consent form signed by your parent if you are under 18. One of the first steps is to read an information pamphlet about donating blood to make sure you are not taking any medication that prohibits you from donating. You will be asked questions about your health history and travel history. They check your temperature, pulse, blood pressure and your hemoglobin level to make sure your iron is high enough to donate. You donate about a pint of whole bl...