OK, I'll give it a shot.
I've ordered a kit directly from National Geographic Society, of which I'm already a member. It came to $113.95 with the sales tax for PA and shipping.
The kit includes the return postage and a computer generated random code number the test results will be tagged with.
The NGS claims your anonymity is maintained because the lab that processes it only has the code number and not your identity, and the results are not mailed to you. To get the results you have to access them online with the code number.
We all know that any precautions they come up with to guarantee privacy can be circumvented or breached through carelessness but I don't see a potential problem with this information as I'm sure I'm all ready on numerous government "lists".
I'll keep you posted.