Use of a solid phase red blood cell adherence method for pretransfusion platelet compatibility testing

Area of Science:

• Immunology
• Transfusion Medicine
• Hematology

Background:

• Refractory platelet recipients often experience poor transfusion outcomes due to alloimmunization.
• Human Leukocyte Antigen (HLA) matching is a common but time-consuming method for donor selection.
• Platelet-specific antibodies can also cause refractoriness, necessitating specialized detection methods.

Purpose of the Study:

• To evaluate the efficacy of a solid phase red blood cell adherence method for platelet antibody detection and crossmatching.
• To assess the correlation between this method's results and transfusion outcomes in refractory platelet recipients.
• To determine if this method is a viable alternative to HLA matching for donor selection.

Main Methods:

• Patient sera were screened for Human Leukocyte Antigen (HLA) or platelet-specific antibodies.
• Potential apheresis platelet donors were crossmatched using the solid phase red blood cell adherence method.
• Transfusion outcomes were analyzed in relation to crossmatch results, excluding non-immune platelet destruction.

Main Results:

• The solid phase red blood cell adherence method demonstrated a 97% correlation with transfusion outcomes in patients without non-immune platelet destruction.
• The method proved feasible and effective in selecting appropriate apheresis platelet donors.
• It offers a practical alternative to HLA matching for refractory platelet recipients.

Conclusions:

• The solid phase red blood cell adherence method is a reliable tool for platelet antibody detection and crossmatching.
• This technique provides a faster and simpler approach to donor selection for refractory platelet recipients.
• Its implementation could enable more hospital laboratories to perform pre-transfusion platelet antibody screening.