Blood Bank Not performing direct antiglobulin tests (DATs) on newborns born to group O Rh positive mothers is acceptable good practice, providing there is appropriate surveillance and follow-up to detect hyperbilirubinemia. Select true or false {Ans: T; If all newborns were tested, many positive DATs due to ABO incompatibility would be detected that are of no clinical significance. Although many laboratories test infants born to group O Rh positive females due to the higher risk of ABO HDFN when the mother is group O, testing such infants is optional provided there is appropriate monitoring and follow-up for hyperbilirubinemia.}Blood Bank What must be true for the antiglobulin phase of the serologic crossmatch to be omitted (i.e., immediate spin crossmatch is done)? Please select all correct answers A. The antibody screen must be negative. B. The patient has not been transfused within the past 24 hours. C. There is no history of detection of unexpected antibodies D. The blood is needed for surgery {Ans: A & C; The antiglobulin test may be omitted from the serological crossmatch if the patient's antibody screen is negative and there is no history of detection of unexpected antibodies.}Chemistry The recommended storage temperature for the