"It only takes 10 minutes, and pregnant women over 6 weeks can detect the sex of the fetus (male or female) at home through urine. It's convenient, safe, and has an accuracy rate of over 90%. Compared with ultrasound, it is 10 weeks earlier in detection time and improves accuracy by 10%." Currently, this product named "Gender Test" is very popular among pregnant women on the Internet. Many expectant parents are eager to try it out in order to know the gender of their unborn child in advance. However, experts unanimously oppose it: currently, they have not heard of this fetal sex detection technology, and selling such reagents goes against national regulations and policies, so they absolutely do not recommend that expectant parents try it.