Pretty sure there is a board post about it, but I THINK there was a contamination issue or something. Certainly have not heard of any issues in a long time.
Did you enter him on the CPP site? If the blood was received it will be marked there. They do not send any notice that it was received. But interesting that the ck was not cashed yet… could be that it has not been recorded yet since you did send on a Thursday to arrive on Friday... and Monday was a holiday