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Blood Types


O BLOOD TYPE

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WHY IS TYPE O BLOOD SO IMPORTANT

Here's Why Blood Type Matters

Before the discovery of blood types in 1901, people were receiving blood
transfusions regardless of blood type. These transfusions were the cause of many
deaths due to the incompatibilities. We have come a long way since 1901. 
Research and understanding of blood type compatibility safeguards patients today
against adverse reactions.


LEARN MORE ABOUT YOUR BLOOD TYPE COMPATIBILITY

Download Guide
Type O Negative
 * O negative is the most common blood type used for transfusions when the blood
   type is unknown.  This is why it is used most often in cases of trauma,
   emergency, surgery and any situation where blood type is unknown.  O negative
   is the universal blood type.
 * O negative blood type can only receive O negative blood.  
 * O negative 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. Learn more about how you can be a Hero for a Baby.
 * Only 7% of the population have O negative  blood. Due to the its versatility
   for transfusions, it is in high demand.  In an emergency, it is the blood
   product of choice. For example, just one car accident victim can require up
   to 100 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.

Type O Positive
 * Type O positive blood is given to patients more than any other blood type,
   which is why it’s considered the most needed blood type.
 * 38% of the population has O positive blood, making it the most common blood
   type.
 * O positive red blood cells are not universally compatible to all types, but
   they are compatible to any red blood cells that are positive (A+, B+, O+,
   AB+).
 * Over 80% of the population has a positive blood type and can receive O
   positive blood. That’s another reason it’s in such high demand.
 * 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. Learn more about how you can be a Hero for a Baby.
   
 * In major traumas with massive blood loss, many hospitals transfuse O positive
   blood, even when the patient’s blood type is unknown. 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?

ABOUT 43% OF AMERICANS ARE TYPE O.




HEART DISEASE IS LOWER WITH TYPE O.




TYPE O CAN DONATE RED BLOOD CELLS.





WHY DONATIONS ARE SO IMPORTANT

Latest studies have shown that someone in the US needs a blood transfusion every
2 seconds each day in the United States. The average person can only donate 1
pint of whole blood in a single donation and the shelf life is 42 days, which is
why the need to keep replenishing the supply to meet  demand is great.

schedule your donation

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