If you are ordered to court proceedings over child custody or support and ordered to bring tax returns for the last few years may one ask the Judge that you want a DNA test done for proof?
Your best bet is that you go to court WITH a Family Law
Attourney. He will know how to approach the subject with the Judge,
very possibablly before you even get to Court. There are many
atty's that will see you for no cost to see if they can help you.