While you were married, you may not have been able to spend as much time with your children as you would have liked. Work may have claimed much of your time, and now divorce has made being with the kids even more challenging.
If you're locked in a child custody battle, one of the requirements the judge may ask for is a DNA test to determine the child's biological parentage. In case such a demand is made, you will need to supply a DNA sample for testing. You will be provided with a paternity test kit which contains three sets of swabs for collecting DNA. One set will be used by the child, another by your ex-spouse and the third one by you. Remember that home administered DNA testing is not admissible in court.