You will be very interested in what is shown in the meeting video and pdf's on this page of the CPSC's site, I think
http://www.cpsc.gov/about/cpsia/apparel.htmlMy personal opinion is that the CPSC has left the ability to define reasonable testing to us. I think that, bottom line, the point of our reasonable testing program is to be darn sure our final products are lead safe because, ultimately, we're liable if they're not.
What steps are required to be absolutely sure would, I assume, vary depending on what one makes and with what materials those products are made.