The white envelope came with simple to understand instructions, 3 cotton swabs in a sealed package, a permission-to-test form that has to be signed, an envelope to put the swabs in after they've been used, and a return envelope. That's it. Nice and simple.
I'll do the "swab thing" tomorrow morning, sign my permission-to-test form, and send it all off in the mail. Then I wait, 5 weeks according to the instruction sheet. That's the hard part ;-)