Boy or Girl. Pink or blue, let IntelliGender tell you! Get clear results in 10 minutes! IntelliGender's Gender Prediction Test (G.P.T) is designed for easy home use by expectant mothers curious about their baby's gender. G.P.T. is a simple-to-use urine test that can be performed as early as 6 weeks following the first day of your missed period and provides clear results in just 10 minutes!