Is knowing the abo blood type of a potential blood donor enough to determine a suitable match? explain your answer?

Compatibility in the ABO blood type is necessary for the blood transfusion, but that is not sufficient to determine the possible donor.

The Rh factor should also be taken into consideration when determining blood transfusion compatibility. A person can be Rh positive or negative, and the Rh positive Rh blood donors can only donate to other Rh-positive people.