[Changes in the structure and clinical significance of the positive results of pretransfusion testing during the switching from tube test agglutination to gel microcolumn technique].

Aim: To investigate the changes in pretransfusion testing during the switch from the agglutination tube test to the gel test.

Methods: Clinical significance of positive results has been analyzed in 7667 pretransfusion tests (with 16610 cross-matches) performed by the tube test in 2005-2006, and in 7372 pretransfusion tests (with 17294 cross-matches) performed in 2007-2008 by the gel test.

Results: In both analyzed periods antibody detection was positive in 1.