I've heard of this gender predicting test you can get at the drug stores in the US. We don't have that product here in Canada, so I forget what it's called. It measures the levels of something or other in your urine to determine the gender. If you do it far enough along, it's supposed to be fairly accurate. I want to say I read that it's 80% or something? Have any of you ladies tried one of those tests? I'm curious as to how accurate they actually are.
That is the intelligender test. I haven't taken it but it's supposed to measure the acid/alkaline of your urine. I believe that is the basis of baking soda/drain0/bleach tests too (with acidic ruin pointing to boy & alkaline urine for girl, I believe)