All blood product collected here is used for Mayo Clinic patients and the surrounding community. We rely on volunteer donors. Many patients and caregivers donate blood as a way of giving back while they're here. Others might make a one-time donation in honor of a loved one who was healed at the clinic. In whatever way you give, you'll have the gratitude of the people receiving your life-saving blood donation. The blood donor centers in Rochester, Minnesota, welcome you.