Are you kidding me? Syringes, swabs and gauze from 2000 and 2001?
First of all, why the hell would he keep these things when, at the time, Roger was not only ManNamee's meal ticket, but was also "teaching (him) how to be a father and a man"?
Secondly, DNA on a syringe swab and/or gauze means only that it touched Roger at some point. When it touched him was it full of B12? Lidocaine? Who knows?
This not only proves nothing, but makes MacNamee look a lot worse.