A patient has Anti-C and Anti-Jka. She needs 3 units of RBCs prepped for surgery the next day.
C antigen: 70% of the population is POSITIVE, 30% is NEGATIVE
Jka antigen: 75% of the population is POSITIVE, 25% is NEGATIVE.
How many units will you most likely have to antigen type to get 3 units that are compatible with this patient?
37
1
40
2
7
8
