Karol,
I also did my blood draws out of state from where my recipient was initially evaluated.They send the kit, very self explanatory, with a return label for Fed Ex. I actually had someone at work draw it for me, spin it and then I packaged and sent it. But as others said they can give payment information and scrip for all the blood work and the blood lab can bill the center.
Good luck to you and Jenna,
Sherri