Board Thread:Naruto Gaiden/@comment-26084508-20150617064121/@comment-25402783-20150621004342

Devilhunter9137 wrote:

i agree Karin had to at least be there for the birth if she has a sample of Sarada's DNA if its a umbilical cord or not i dont know like you said its hard to tell but from what Sueigetsu thought to himself its makes the most sense. And about Karin keeping the cord in her desk that is some thing i also said in a different thread as well as Orochimaru ordering her to maybe steal it for the Uchiha DNA especially if Sakura is the birth mother i mean regardless of her showing she is strong so Orochimaru might want her genes as well. i wouldn't say the 100% match is a stretch like i said it looks like it matches perfectly which wouldn't be possible if it was matching a parent's DNA to a child and i think the last few chapters put too much into genes and DNA for that to be a oversight

also want to point out one possible reason why there are no records of Sarada's birth other then the theory that Sasuke and Sakura were traveling when she went into labor maybe they kept Sakura's pregnancy a secret in case some one might have wanted to harm or kidnap the first born Uchiha in years Yeah my best guess is that Sakura gave birth outside the village. Maybe, like you said, it was to keep Sakura safe. She would normally be able to take care of herself but if a woman is pregnant it would be much its much harder to defend themselves. Though the only thing that gets me is why so much secrecy? I mean why can't they tell Sarada how and where she was born? But again if Karin is the mother than it makes Sasuke an awful person.

Also going back to the 100% match thing, it could have just been looking at Karin's DNA and that's why it was a 100% match. Though I think your right in that Sakura is the biological mother.