You can find out the sex of your baby from the 8TH week of gestation through a simple blood test that is performed in the mother, which analyzes the fetal DNA that contains.
With this system is not necessary to wait to be found in a more advanced stage of pregnancy to perform an ultrasound and also avoids making fetal cells through invasive procedures.
With this system there is no risk to the baby or the mother and there is a reliability of 100 %.