I am responsible for building the Blood Bank module in Meditech Magic and am having trouble with the Rh Undetermined typing. Does anyone have any suggestions of the best way to get Meditech to properly evaluate the blood type truth table to correctly identify Rh Undetermined without the need for including the weak D testing on every ABO/Rh test ordered? We are due to go live in late February and I am trying to perform the computer validation for the Blood Bank module but am unable to continue past the ABO/Rh validation.