@_Whitetigress Oh, I understood it was your dad that you weren’t sure about, I just thought maybe your mom had told you the results.
Do the test again so you don’t have to guess. There is always a chance of a mix up. If it had been positive for a match I would say it was almost impossible for it to be wrong, but a negative would have more chance of having a mistake, although a small chance. Think about it, if the test say yes you two share DNA like a father and son, it would have to be correct, because what is the chance if the lab mixed up two samples the other sample in the lab is actually your dad. But, if it comes up you don’t match, almost any lab error where they confuse two samples would give a negative.
Do you dread doing another test? If it is negative again would it be upsetting?
If your dad isn’t your bio father, then do you know who your bio father supposedly is?