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O- blood used to be considered the universal blood donor but now medicine knows that there are other factors in the blood that can cause rejection from the body.

http://www.mayoclinic.org/tests-procedures/blood-transfusion/expert-answers/universal-blood-donor-type/faq-20058229

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Can AB blood type donate to A type?

They can only donate to other AB types, but they can receive blood from A, B, or O.


To which blood type can a AB type donate?

Yes. O- can donate to all blood types. O+ can only donate to other positive blood types, including AB+.


Can a person with type o blood receive blood from largest number of other blood types?

The only type O can receive from is O. O - can only receive from O -, but can donate to A, B, AB or O, either + or -. O + can receive either but can only donate to A, B, AB or O Rh +.


What blood types can A positive donate to?

Type A blood can only be donated to others with Type A blood or AB blood.


Which blood types can donate to AB blood types?

People who have AB blood are the universal recipient. They can receive blood from any blood type which can come in handy in an emergency situation requiring blood.


What are the four types of blood in the people?

The four different types of blood are: A, B, AB, and O. When you donate blood, or have blood drawn, at the hospital, they will tell you which type you have,and usually give you a card to identify your blood type on your identification.


What two blood types are not compatible?

More than just two blood types are not compatible with each other. The four basic types of blood are: A, B, AB, O(not counting Rh). Type A blood can only receive blood from type A and type O. However, type A blood can donate their blood to type A and type AB. Type B blood can only receive blood from type B and type O. However, type B blood can donate their blood to type B and type AB. Type AB blood can receive blood from every type, A, B, AB, and O. However, type AB blood can only donate to other AB. Type O blood can only receive blood from type O. However, type O can donate their blood to A, B, AB, and O. So, AB is the "universal" reciepient and O is the "universal" donor.


Which of the blood types can receive blood from the largest number of other blood types?

Blood AB.


What group can you give blood if you have blood group A?

A ab Blood Group A+ve patient can receive donors of Group: A +ve . A-ve . O+ve And O -ve , and patient with blood group A -ve and can only receive A-ve and O -ve, in terms of Packed red cells ( Red blood cells) is required .


What blood groups enables a person to donate blood to other person?

Anyone can donate blood.The tricky part is deciding which person can receive your blood - it's based on blood types. Type O, for example, can only receive more type O and you also have to match up the Rh factor for + or - (+ can receive anything, - can only take more - blood). Type AB can receive any blood so long as the Rh factor matches up properly.


Why is it important for AB blood types to donate blood?

It's important for anyone who can donate blood to donate, but the fact is that AB is not a donor for any blood type but its own. AB can only donate to AB. AB is, however, what is referred to as a universal recipient, meaning that someone with type AB blood can receive blood from AB, A, B, and O blood types. This being the case, it wouldn't seem that a shortage of AB blood would be a problem unless there is a generalized blood shortage of all types (which there usually is, so donate if you can spare a pint!)


What blood types are compatible?

Well blood type O+ can be given to anyone, but they can only receive their blood type. And O+ blood can be combined with certain materials that are found in A type or B type to make it another blood type. And people with a blood type of A or B or AB can only give their blood to people who have the same exact blood type as them.