Joke Collection Website - Blessing messages - I went to the blood donation station and tested that I was type A blood. Why call me in a few days and tell me that I am RH negative?

I went to the blood donation station and tested that I was type A blood. Why call me in a few days and tell me that I am RH negative?

It shows that you are ABO system A, RH system negative, RH negative in Han population is less than 1%, ABO system A is about 30%, and RH negative blood group A is about 30% multiplied by 1%. Many blood banks do not have RH-negative blood, and RH-negative women marry RH-positive men, so they should consider RH hemolysis of newborns and be prepared.