The answer to this question is going to depend on a few things, but first and foremost, you need to respond within the timeline written on your notice and request a hearing. First of all, do you believe you are the father of the child? If not, then you will need to contest the paternity of the child. This does not mean that you need to run out and do your own testing then give that to the court. This is a bad idea for a few reasons: One, the test you choose may not even be admissible to prove or disprove paternity so the court will not even look at the results, and second, you might be wasting money if the child turns out not to be yours.