You really, really do not want to bring a puppy home that is younger than 8 weeks old. In many states it is illegal AND the puppy misses out on learning valuble puppy skills, most importantly bite inhibition. Many breeders even suggest taking a new puppy home around 10 weeks.
This is SO TRUE!!! 7 wks is way to young to be bring home a puppy and taking it from his/her littermates…. I don't let puppies go till they are 10wks...
And please do not just take someone's word for it that there is no Fanconi.... please check it out for yourself. This is not to say that people are not honest.. but as they always say "Buyer Beware".... it is your responsibility to verify. Also were there any other health tests done?
As Kathy pointed out, most of the responsible breeders all know each other... so I would have to ask the same thing? Who has 7wk puppies? I have not heard of a litter.....