Blood Group Compatibility Checker: A blood group compatibility checker is a tool (often a simple app, website widget, or chart) that determines whether a donor’s blood type is safe to transfuse to a receiver. It is based on the ABO blood group system (A, B, AB, O) and the Rh factor (+ or -), which prevent dangerous immune reactions during blood transfusions. Mismatched blood can cause the receiver’s antibodies to attack the donor’s red blood cells, leading to severe complications or death.
Blood Group Compatibility Checker
Check if a donor's blood can be safely given to a receiver
Note: O- is the universal donor. AB+ is the universal receiver.

