my friend had a blood test and told that she is A-negative, but in other time the lab told her that she is A-positive.and it happen five times.at first A-negative (lab), then A-positive (red cross), then A-negative (red cross - other time), then A-positive (lab - other lab), and at last A-negative (lab - other lab) again???how can it possible???i am not joking, it's true!!!

my friend had a blood test and told that she is A-negative, but in other time the lab told her that she is A-positive.and it happen five times.at first A-negative (lab), then A-positive (red cross indonesia), then A-negative (red cross indonesia - other time), then A-positive (lab - other lab), and at last A-negative (lab - other lab) again???how can it possible???i am not joking, it's true!!!