O negative is the most common blood type used for transfusions when the blood type is unknown.
O negative is the most common blood type used for transfusions when the blood type is unknown.
O negative is the universal blood type.
O negative is the universal blood type.
O negative blood type can only receive O negative blood.
O negative blood type can only receive O negative blood.
O negative donors who are CMV negative are known as Heroes for Babies
O negative donors who are CMV negative are known as Heroes for Babies
Only 7% of the population have O negative blood.
Only 7% of the population have O negative blood.
O negative is the first blood supply to run out during a shortage due to its universality.
O negative is the first blood supply to run out during a shortage due to its universality.