Is a small town just outside Washington DC - they renamed it Chantilly. No but how bad would that suck "what do you do" - "uhm, well I'm a meconium analyst with NIH".
How can they return the test results if all the personal identifying info has been removed?
Volunteering for this would be crazy. They'd never let you go, they'd always be wanting more blood or something - which is fucking creepy. Weird govt people would be showing up at your house and school asking the kid questions/taking samples for the rest of their school careers. Some crazy lab guys would kidnap the kid to get more if you declined. (the last one's a joke, I hope)
They'd change the privacy rules someday and some genetic doctor would call you up and say "hey, you are going to die from <disease> unless you purchase our patented cure". You know they'll sell the info. They always do.
While I realize some good might come from a study like this - however at this time our governments can't be trusted to not fuck the 100,000 volunteers over.