Hello girls! Is it possible to do a DNA test for paternity before goin…

Hello girls! Is it possible to do a DNA test for paternity before going to court? Today we learned that if we go to court, it will be cheaper, but will the judge accept this document? The husband wants to contest paternity from his ex-wife, there is a daughter according to the law, but biologically he's not her father! Thanks in advance! Maybe someone knows the laws