There is no tox report. The medical reports indicate none were done. There's a box to check, and the box for no tox screen was checked.
It didn't happen. Therefor Nifong lied about these yooung men when he suggested to the medica that Mangum was given a date-rape drug by the boys,
Perhaps the absence of a tox report is one of the pieces of information that started some of the talking heads wishing they had kept their mouths shut.