How do I merge two DNA kits and should I?

[djipon]

Hey, I've heard some people merge their RAW files from different companies, as they test different parts of the DNA.

How/where can you do it (I know DNAgenics offers such service) and most importantly - is the file that is to be created useable and accurate?

What spheres can you use it in? (Autosomal upload to MyHeritage for example, illustrativeDNA and so on)

[Beowulf]

I think it's ok if ur purpose is using qpadm but.. idk how to do it by disgrace.