how much blood is taken when you donate
You can donate blood at American Red Cross clinics or other clinics or blood banks. You may be able to donate during blood drives at your workplace. About 1 pint (480 mL) of blood is taken when you donate. It takes about 10 minutes. The whole process-including answering questions and having a short exam-takes up to an hour. Donated blood is tested to make sure that it is safe to use.