My daughter's mother recently served me with paternity papers. I want to try and get custody because of mother's bi-polar/mental instability issue. My questions are: 1) If she files paternity suit, what happens if I cannot afford the DNA test? (I have heard it is close to $800.00) and 2) If I ask for full custody and it is denied, does that mean I don't get any custody at all? Or would I have to file another suit for joint custody after denial?