still looking for answers

I am still looking for answers. We found out today that the genetic test that was done was not the one that covers the rare mutations. It only covers 97 of the most common. The good news is he does not have one of them. The bad news is we don't know if he has one of the rare mutations. We meet with the doc. next week to set up the other test.We arestill in the borderline group and I still don't understand what that means. I thought you eather have it are you don't. Our number was 52 that is 8 points under what they say is a sure positive.Does the number go up down are stay the same.please if anyone can help me understand i would be so greatful. thank you!