Probably 400 yuan. Different hospitals charge different fees. It is more appropriate to do four-dimensional examination at this time, mainly to see if there is any abnormality. Do it once a month when you are pregnant.

B ultrasound examination

/kloc-do it in 0/5 weeks.

Down syndrome screening

Do a color Doppler ultrasound examination at five months. But there is no guarantee that it will be detected. I have to do childcare after giving birth.