This automatic system combines the major cross-match with screening for alloand
autoantibodies. Moreover, the detected antibodies can be identified on a panel of frozen
and thawed red blood cells (RBC). The system is made up of two connected samplers, three
channels working, respectively, with bromelin PVP, LISP and saline PVP at 4°C, three
colorimeters or three red cell autocounters and their recorders. The optimal speed is 50
samples/h and one whole test requires 19 min. Our experience indicates that this automatic
system is appreciably more sensitive and much more rapid and efficient than manual
techniques. In spite of increased sensitivity, the ratio of rejected bags does not exceed
2.7%.