How do you find out blood type?
To find out your blood group, a sample of your blood has to be taken and tested. However, GPs do not routinely check people’s blood groups. You can also find out your blood group by giving blood.
Does my doctor know my blood type?
If your doctor has drawn or tested your blood before, it is likely they have your blood type on file. You can ask your doctor to conduct a blood test if your doctor doesn’t have your blood type on file, call or visit your doctor’s office and ask for a blood test to determine your blood type.
What is the rarest blood type?
In general, the rarest blood type is AB-negative and the most common is O-positive. Here’s a breakdown of the most rare and common blood types by ethnicity, according to the American Red Cross.
Do you find out your blood type when you donate blood?
You don’t need to know your blood type.
Donors may be notified of their blood type following their donation when they receive their blood donor card or by creating a profile through the Red Cross Blood Donor App.