Every fiber of Bruce wants to protest, and he can't hide the brief flinch when she comes near him with the tape. She'll pick up trace hairs on his clothes, his DNA, and while he's never really given his hair much thought, it's only now he realizes it might betray him.

"Uh, sorry." He mumbles and then goes still as he lets her gather what she needs. Rejecting the sampling now would raise too many red flags, so right now he can only be content in the fact that his hair didn't contain the amounts of gamma radiation that his blood does. The genetic structure would certainly be an interesting discovery for Horatio's people, that much he's certain is going to show up, but that should be the end of it. If they try to get blood samples though, or swabs, he's going to have something to say about that.