Quote dramaqueen333: In paternity tests, if you are NOT the father, it is 100%. If you are judged to be the father, the number will be somewhere between 96% and 99.9%. So it looks like Nick is the father, or the writers don't have all the facts about DNA testing.
it also could be this was just the way jm put it into his own words..
also, he CAN'T put out the real result cause that would be giving away a spoiler for the storyline