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Some times the cards (Diamed) gave us false positive or false negative results while typing for fya and fyb antigens.We tryed to solve the problem by increasing the time of incubation for 5 min more, increase the concentration of RBC, and centrifuge the cards before using.Is it right to change the proceduer like we did?, Do you have other ways to solve this problem?

Hi for all I have a problem in the typing result of Fya,Fyb antigen by using Diamed gel Techniec. I trayred to solve but still !! Any one have any solution for me, please?

Good evening ....In our lab we repeat the typing for negative antigen on donor RBC before issuing the unit to the pateint.

hi .. we usually spin the cards before using .