The " type " in this case is the Rh type, specifically the phenotype, and the " screen " refers to testing for atypical antibodies that might cause transfusion problems.
2.
If a potential donor is found to have anti-D antibodies or any strong atypical blood group antibody by antibody screening in the blood bank, they would not be accepted as a donor ( or in some blood banks the blood would be drawn but the product would need to be appropriately labeled ); therefore, donor blood plasma issued by a blood bank can be selected to be free of D antibodies and free of other atypical antibodies, and such donor plasma issued from a blood bank would be suitable for a recipient who may be D positive or D negative, as long as blood plasma and the recipient are ABO compatible.