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The page below is a sample from the LabCE course Current Good Manufacturing Practices for Transfusion Services. Access the complete course and earn ASCLS P.A.C.E.-approved continuing education credits by subscribing online.

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Compatibility Testing

Standard operating procedures for compatibility testing are listed in section 606.151 and must include the following:
  • A method of collecting and identifying the blood samples of recipients to ensure positive identification.
  • The use of fresh recipient serum or plasma samples less than 3 days old for all pretransfusion testing if the recipient has been pregnant or transfused within the previous 3 months.
  • Procedures to demonstrate incompatibility between the donor's cell type and the recipient's serum or plasma type.
  • A provision that, if the unit of donor's blood has not been screened by a method that will demonstrate agglutinating, coating, and hemolytic antibodies, the recipient's cells shall be tested with the donor's serum (minor crossmatch) by a method that will so demonstrate.*
  • Procedures to expedite transfusion in life-threatening emergencies. Records of all such incidents shall be maintained, including complete documentation justifying the emergency action, which shall be signed by a physician.
* Because most units are screened by the donor center and the majority of blood components are transfused as Red Blood Cells, the minor crosssmatch is rarely performed as a part of compatibiltiy testing for blood components.