to Terry and Tanza thanks thanks.for the ideas i will try them both and hopefully get a good sample. Our boy's brother passed away suddenly from what was thought to be fanconi Very important we get this done. Our babies are actually uncle and niece and they are 8 & 7 years old. Our breeder is great and knows all their history of parents, grandparents, great grands etc. No one else has tested postive only grandfather and great grand father.
We want to know their results so we can be proactive in their care Thank you very much