The kit comes to your home. You collect a blood sample from a finger prick. Send it back. They use a controlled lab to view and study the sample. They look for male fetal blood in combination with the mothers. If they find it , it's a positive and a boy is on the way. If it's absent, you're having a girl! The results are emailed to you! The craziest thing is, they can detect gender at 9 wks! I'm 9 weeks today and my birthday is coming up. I think this is such a great concept!   I'm getting it done as a birthday gift!  Some of you may think I'm crazy but I think it would be so much fun to know so early!!