Medically reviewed by Amelia MacIntyre, DO There are different blood types: A, B, AB, and O, with each also being Rh-positive or Rh-negative.Knowing your blood type is important for safe blood ...

Your blood type might seem like a minor detail in your medical history, but it carries significant implications for your health and medical care. From emergency transfusions to pregnancy planning, ...

Blood is made up of red blood cells, white blood cells, platelets, and plasma. Markers called antigens are found on the surface of red blood cells, and differences in these markers classify various ...

Jul. 22—ROCHESTER — The Mayo Clinic Blood Donor Program is issuing an urgent call for type O-negative blood donors. It is currently facing a critical shortage of O-negative blood, according to a press ...

Before donating blood, donors must check their eligibility, because there are restrictions surrounding health, recent vacation or travels, and/or recent sexual activity. After checking eligibility, ...