When we started the adoption process we wanted to adopt siblings, we wanted them to have someone that looked like them and shared their dna. It was something that was important to us.
We had the boys dna tested though 23 & me to help fill in their medical history. It is nice having the information to share with their doctor.
The added bonus of using 23 & me is that other adoptive families are also using it and we are finding distant cousins (3rd to 5th). I think it is really cool learning about all their cousins. We now have cousins that share our dna all over the country.
If you are interested in using 23 & me and use one of the links I put in, I do receive a small referral fee.