Who is type o negative

For example, just one car accident victim can require up to units of O neg. Meeting the demand for O negative blood is always a priority for the Red Cross. O negative is the first blood supply to run out during a shortage due to its universality. O positive donors who are CMV negative are known as Heroes for Babies at the Red Cross because it is the safest blood for transfusions for immune deficient newborns.

The risk of reaction is much lower in ongoing blood loss situations and O positive is more available than O negative. Type O positive blood is critical in trauma care. Those with O positive blood can only receive transfusions from O positive or O negative blood types.

Type O positive blood is one of the first to run out during a shortage due to its high demand. Did You Know? Only O negative blood People with O negative blood can only receive red cell donations from O negative donors. More information about the different blood types that provide a lifeline to all kinds of patients. NHSBT uses cookies which are essential for the site to work. We also use non-essential cookies to help us improve our services, any data collected is anonymised.

By continuing to use this website you agree to our use of cookies. Read more about our cookies. Hi there, we see you're using OS , why not try our app? Skip to main content. Why give blood Demand for different blood types Blood types How blood is used Who you could help. Who can give blood Can I give blood? Blood types are determined by the presence or absence of certain antigens — substances that can trigger an immune response if they are foreign to the body.

Since some antigens can trigger a patient's immune system to attack the transfused blood, safe blood transfusions depend on careful blood typing and cross-matching. Do you know what blood type is safe for you if you need a transfusion? There are four major blood groups determined by the presence or absence of two antigens — A and B — on the surface of red blood cells. There are very specific ways in which blood types must be matched for a safe transfusion.

The right blood transfusion can mean the difference between life and death. Also, Rh-negative blood is given to Rh-negative patients, and Rh-positive or Rh-negative blood may be given to Rh-positive patients. The rules for plasma are the reverse. There are more than other known antigens, the presence or absence of which creates "rare blood types.

Learn about blood and diversity. Universal donors are those with an O negative blood type. O negative blood can be used in transfusions for any blood type.