It depends which test you are referring too, your dog has not yet been sequenced by us so I cannot provide much information about your pup specifically. For our genetic testing, it depends on what we have in our reference panel (located on our FAQ page).
We are constantly working to build our reference panel so that results are more accurate. Right now we are working on getting more American Pit Bull Terriers into our reference panel, so we should be able to tell reliable % of Pit Bull in your dog once sequenced! 🙂
I hope this helps!