What laboratory tests should be ordered on patients being considered for RhIG therapy for ITP?

Given that RhIG therapy for ITP is known to destroy Rh positive patient red cells (with or without clinically relevant hemolysis), pretransfusion laboratory tests that may be useful include:

  • CBC
  • Creatinine
  • Rh status
  • LDH
  • Bilirubin
  • DAT