This basic economic theory states that when there is a relationship between supply and demand.
The relationship is as follows: the amount available and the desire of buyers for it, regulates price.
O+ blood can be given to over 80% of patients who require blood.
Since only about 38% of the U.S. population is type O+, there’s often not enough O+ blood available to meet patient needs.
The demand is greater than the supply.
Will you help fill it?