In the states it just requires consent, a match, and money/insurance to pay for it. When you get surgery you have to sign a release saying you'll allow them to do a blood transfusion in the event of something going wrong due to religious concerns (that you can decline to sign and accept the negative outcome). Outside of that there's no way to guarantee the blood isn't tainted since there's no box to tick.

Autologous and Directed Donations A directed donation occurs when a patient's ABO and Rh compatible family members and/or friends donate blood for his or her upcoming procedure.

From the first page after searching

American blood donation family

Research ain't hard homie. I would say the mom is kind of a dick for not at least rolling the dice on getting pure blood, but at this point those odds most likely are impossible to overcome.

In the states it just requires consent, a match, and money/insurance to pay for it. When you get surgery you have to sign a release saying you'll allow them to do a blood transfusion in the event of something going wrong due to religious concerns. Outside of that there's no way to guarantee the blood isn't tainted since there's no box to tick.

Autologous and Directed Donations A directed donation occurs when a patient's ABO and Rh compatible family members and/or friends donate blood for his or her upcoming procedure.

From the first page after searching

American blood donation family

Research ain't hard homie. I would say the mom is kind of a dick for not at least rolling the dice on getting pure blood, but at this point those odds most likely are impossible to overcome.