The NC SBI spokesman went on TV and said that the DNA testing wasn't too complicated and that they had the same testing hundreds, if not thousands of times.
IMO, Nifong with his reputation on the line, submitted the same testing to a private lab thinking something is there.
Most likely, they did do other tests that focus more on several players in particular, too.
Taxing my brain to remember....one TH tonight said the DNA results were "inconclusive" so they had to be retested.