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It takes the marrow about that long to fully replace the blood. Donating too frequently will result in your blood being depleted in several important components.

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Q: Why can I only donate blood every 2 months?
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Can you sell your blood?

You can donate your blood, but most places do not pay for it. If you want to make money, you will want to donate your plasma. They take part of your blood and put another part of your blood back in your arm. If you donate blood, you can only do this every 56 days. If you donate plasma, you can make money twice a week.


What blood type can donate to everyone else?

Blood type AB can only donate to another AB type. Blood type O+ can be given to anyone, but a blood type like A or B or AB can only be donated to a person who has the same exact blood type as the person who is donating their blood.


You are o - to whom you can donate and from whom you can received blood?

You can donate you any blood type, but only accept type O- blood


Does type A can donate to any bloodtypes?

No, they only can donate to blood types A, and AB.


Who can blood type A donate to?

Only type A


Type O Blood can only donate to Type O Blood so how are the Type O Blooded people going to ensure their is blood in any Local Blood Bank for them in an emergency?

They're not really going to be able to, aside from just donating every two months. Type O people can only RECEIVE Type O blood, but they can DONATE blood accordingly: O positive can give to A positive, B positive, AB positive or O positive; O negative can give to anyone.


What blood type should each kind should donate to and receive from?

Blood group A can donate and receive blood from blood group A. Blood group B can donate and receive blood from blood group B. Blood group AB can donate only to blood group AB and receive from any other blood group (they are universal recipent) Blood group O can donate to any other blood group ( they are universal donor) and can receive from only blood group O.


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 someone who is b plus donate to some one who is O plus?

No. Someone who has B blood can only donate to someone with AB blood and B blood. Someone with O blood can only take O blood.


What blood types can person with blood type A negative donate?

A person with A negative blood can donate blood to a person with A negative blood and a person with AB negative blood.


Do you have to have a special card if you do not want to donate blood?

no you only need a card if you do want to donate blood so unless there is a card by law they can't take your blood