What is the rarest blood type?
The rarest blood type is the one not on the shelf at the moment a patient needs it.
What is a Universal Blood Donor?
A Universal Blood Donor belongs to the O- blood group. The red blood cells of a universal blood donor may be transfused to anyone, regardless of their blood type.
What is a Universal Plasma Donor?
A Universal Plasma Donor belongs to the AB blood group (positive or negative). The plasma of those belonging to the AB blood group may be transfused to anyone, regardless of blood type.
Here’s a breakdown of each type and their rarities in the United States:
|Type||% of population|
|O+||Approx. 1 person in 3 is O+, or 37.4% of the population.|
|O-||Approx. 1 person in 15 is O-, or 6.6% of the population.|
|A+||Approx. 1 person in 3 is A+, or 35.7% of the population.|
|A-||Approx. 1 person in 16 is A-, or 6.3% of the population.|
|B+||Approx. 1 person in 12 is B+, or 8.5% of the population.|
|B-||Approx. 1 person in 67 is B-, or 1.5% of the population.|
|AB+||Approx. 1 person in 29 is AB+, or 3.4% of the population.|
|AB-||Approx. 1 person in 167 is AB-, or 0.6% of the population.|