I seem to recall that a test for a date rape drug must be requested seperately, not part of a standard tox screen.
If it's not part of a standard Tox Screen (via urine sampling), then either Nifong was blowing smoke OR the "separate" date-rape test was requested and performed. If it was the latter, then it should have been included in the bundle delivered to the defense lawyers.
Has HOSPITAL or NIFONG messed up?