The main purpose of testing prior to transfusion is to provide the most compatible blood to the patient in order to minimize the risk of hemolytic transfusion reactions. The type and screen are the first two tests required as pre-transfusion testing.
What is special about the Rh factor grouping system?
The Rh blood group system is the most polymorphic of the human blood groups, consisting of at least 45 independent antigens and, next to ABO, is the most clinically significant in transfusion medicine.
Are there any benefits to being Rh negative?
In areas with a lot of Toxoplasma, being Rh negative might be an advantage. The less severe effects of the parasite may outweigh the effects on pregnancy. Rh negative people may also be resistant to other viruses or parasites that we haven’t discovered yet.
What blood type was Jesus?
The only evidence that would conclusively authenticate the Shroud against naysayers and claims of forgery is Jesus’ DNA. It would be matched against the blood — type AB — found on the Shroud and considered rare.