Thread: Gender Prediction Kits?

I have a question about Gender Prediction Kits. I was just researching them mostly for fun.
Does anyone know exactly how they work (the science behind it)?
Or has anyone here gotten a positive prediction from one?
and which brand is the best?

I was looking on this website http://www.intelligender.com/index.php

Thanks!

they are a joke, do not waste your money, you can not tell the gender by testing your urine!!! wait for the U/S it will come quickly!

they are a joke, do not waste your money, you can not tell the gender by testing your urine!!! wait for the U/S it will come quickly!