Generally, a person's blood type and whether they are Rh positive or negative is not significant because it has no impact on their health. The remaining 15% of people do not have the Rh factor protein on their blood cells. About 85% of people have the Rh factor protein on their blood cells. Rhesus (Rh) factor is a genetic protein found on the surface of red blood cells. In addition being one of the 4 blood types, each person's blood is either positive or negative depending on whether they have the Rh factor protein. A person's specific blood type is based on what kind of antigens they have on their blood cells. There are 4 different human blood types: A, B, AB, and O. This occurs in cases where the mother is Rh negative and her baby is Rh positive. People who have this protein on their red blood cells are considered "Rh positive" and those without are "Rh negative." During pregnancy a mother's Rh factor status becomes significant because if it is different from her baby it can create a dangerous complication called Rh incompatibility. If you don’t know you’re blood type, the blood center will test your blood when you donate and let you know your blood type.Rh factor is a specific type of protein that most people have on the outside surface of red blood cells in their body. But what about an unexpected medical emergency? That’s when O-negative donors save lives! Interested in finding out what blood type you are? If you’re scheduled for a surgical procedure, you can always donate your own blood in advance and be given that during the procedure. What does this mean for you if you have O-negative blood?īecome a blood donor! If you have O-negative blood, you can only receive O-negative blood, so you want to help ensure that there’s always a good supply on the shelves. But this also means that people with O-negative blood can only receive O-negative blood. This means that it’s missing those things that could cause a bad reaction during a blood transfusion and can be given to any blood type. O-negative blood is missing both the A antigen and the B antigen and does not contain the protein for Rh-positive blood. This gives us the common blood types of A+, A-, B+, B-, AB+, AB-, O+, and of course O. You are positive if you have the protein and negative if you don’t. Your Rh factor is determined by whether or not your blood contains a specific protein. Your blood group is determined by whether you have the A antigen, the B antigen, both A and B antigens or neither A or B antigen. That led to safer blood transfusions because doctors transfuse the right type of blood for people need to survive. The existence of the antigens that determine if your blood is O, A, B or AB was discovered about 100 years ago. If you have O-negative blood, the only blood type you can receive is O-negative. While those with O negative are universal blood donors, the blood they can receive when it comes to transfusions is far from universal. I’m O negative, what type of blood can I be transfused with?ĭo you have O-negative blood? If so, you may have discovered that your blood is needed by hospitals and emergency services to help save lives, but you may be wondering what type of blood you can be given if you need a transfusion.
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