The dummy AS is reflexed so we do not have to order it. Actually, the test called a TS-EXM and includes both the Blood Type & AS. The AS has a rule so when the true AS is resulted as Negative, the dummy AS is automatically resulted as negative. The tech then goes into the TS-EXM specimen number to enter the Blood Type result. The TS-EXM has a specimen expiration automatically assigned to expire in 3 days @ 2359. I know it sounds confusing, but it works for us.