LabCorp is not testing hair.
I should think the defense lawyers could get an expedited subpoena to query the lab as to why the delay and if they were instructed to not return the results until a certain date.
This really stinks, and further contributes to the strong impression that these guys are being railroaded.
A rather ugly thought just occurred to me: I wonder if Nifong WANTS to give the impression that he's railroading these rich white guys because he thinks that will get him the black vote - appreciation for railroading rich white Dukies.