Blood type B+ is more common in Asians (25%) and less common in Latin Americans and Caucasians (both at 9%). In comparison, only 39% of Asians, and 37% of Caucasians have this type. Up to 53% of Latin Americans and 47% of African Americans have blood type O+. Some blood types are more common in certain groups. The presence or absence of these can make a person have a rare blood type, and it could be that there are some that have yet to be discovered. There are also over 600 other known antigens that have been found in people to date. About 42% of the global population has type O+ blood but just 3% have type O. If you have it, you should think of donating. Since type O blood is that which can be used for anyone, it is almost always in short supply at hospitals. Blood type distribution is also varied among different ethnic and racial groups. You inherit your blood type from your parents, and as such, there are also some very rare types out there. To donate in the US, click here. To donate in Canada, click here.

It does not hurt and can help save someone’s life. Plasma is what is left if you take away all the red and white blood cells and platelets, and it is 55% of blood's composition. Because of this, type O- is known as the “universal donor.” The universal plasma donor is type AB. Rh-positive blood can only be donated to people who have the Rh protein, and Rh-negative blood can be donated to both negative and positive. Type B can donate to type B, and AB and type AB can only donate to type AB. Generally speaking, type O can donate to everyone, which means type O, A, B, and AB. People with certain blood types are compatible for blood transfusions and certain others are not. If you have to type A blood, for example, you have type A antigens on your red blood cells and anti-B antibodies in your plasma. Antigens are something that triggers your immune system to produce antibodies against a foreign invader. Whether you have type A, B, AB, or O type is determined by the kind of antigens you have on your red blood cells. Your blood can be either RhD positive (+) if you have the protein, or RhD negative (-) if you do not. In addition, each blood type has an Rh factor, or Rhesus factor, which is a protein found in your red blood cells. There are four main known blood types: A, B, AB, and O.

Although this is rare, you can die from the reaction. Your immune system could attack the red blood cells in the donated blood. If you get in a car accident or suffer from some other medical problem that requires you to receive a blood transfusion, the donated blood needs to match your own. It is important to know your blood type as it determines the type of blood you can receive in a blood transfusion. Rare blood types do exist, and people with these typically have to bank their own blood over time for use in an emergency.Type O is the most common in humans as well, but those with it can only receive type O. The universal donor is blood type O and the universal receiver is type AB.There are four main blood types: O, A, B, and AB.Blood groups are categorized by antibodies and substances contained (or lacking) in the blood.

Ab bloodtype