Hello,
I suggest you this article! They compare different techniques ...
"Interpretation of pretransfusion testing in obstetrical patients who have received antepartum Rh immunoglobulin prophylaxis"
A. J. Szkotak,1 B. Lunty,2 S. Nahirniak1 & G. Clarke1
International Society of Blood Transfusion Vox Sanguinis (2015)
Szkotak_et_al-2015-Vox_Sanguinis.pdf