How much can HR negative donate blood for free?

First of all, blood donation in China is free and divided into different types, such as donating whole blood and platelets. Any kind of blood donation has a certain time limit, and blood stations will arrange blood collection according to the inventory of various blood types. You want your father to give it now, but in case something happens later, it is unrealistic to use your own blood.

Second, rare blood group, like your father, he is usually registered at the blood station after volunteering to donate blood (all blood donors are registered for the record), and the blood station will have the contact information of rare blood group people in case of emergency. As long as there is more than one RH-negative blood registered, and one person has something to do, others will come to the rescue.

Third, when someone donates more than 1000 ml, blood will be used free of charge for life.