When is the 4th pregnancy test?

Pregnancy check four-dimensional when to check? Pregnancy four-dimensional color ultrasound about 22 weeks to 26 weeks of pregnancy check. General this stage, baby size appropriate, each organ has matured, amniotic fluid is basically so much, so this stage baby space activity is relatively large, this stage do four-dimensional color ultrasound, doctors easy to see more clearly. So, choose large row abnormal in 22 weeks to 24 weeks time can do. Baby's heart deformity, about 28 weeks is recommended to do, because the structure of the heart inside about 28 weeks can be seen more clearly. The above health science knowledge is for reference only, the specific situation needs to be checked in a regular hospital, judged by a professional doctor.