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Best Answer: O positive ok for transfusing to all positive types. O negative is a unversal to all types. So you cannot donate blood for an O negative if you are O positive. If you just want to donate plasma then you can donate, just not whole blood.
Type O Negative blood (also denoted as Type O -) is just one of thirty or so different blood types spread amongst the human population.Type O Negative blood is one of the 8 blood types that are by far the most common.These 8 blood types are A Positive (A+) , A-, B+, B-, AB+, AB-, O+, and O-. The other blood types are for the most part rather rare.ypes A, B, And AB-If you have Type A blood for example, your blood cells contain antigens your immune system recognizes as being friendly, and you can accept Type A blood from another donor. Your blood serum however contains antibodies against Type B antigens.