Recreational DNA testing eventually led to discovering that I had never before met my biological father. Mom got it wrong. I met him and his family this summer finally. I am slightly irritated that my last name (and my child’s) is now kind of meaningless, and it’s too much of a hassle to change it.
The only thing I can imagine working is for a birth certificate when listing father, would have a selection of “presumed” or “verified”, where verified would have a doctor sign off. It should be optional. But it would be nice if a paternity test was presented as an option automatically, without needing suspicion or accusation.
As it only requires saliva, any father can test their child’s DNA. Babies drool a lot. It may cost a few hundred dollars to do so. I suppose that makes it even less trusting to do it in secret than just having it as standard medical procedure.