This is Jianghu Photo Jade. Is it necessary to buy it?

Not required.

Preeclampsia screening does not necessarily require reexamination at a maternal and child health hospital. In fact, preeclampsia screening can be performed at any medical institution with the relevant equipment and technology. Preeclampsia screening is a must-do test during pregnancy and can predict whether a pregnant woman may develop preeclampsia. If pregnant women develop symptoms of preeclampsia during pregnancy, such as high blood pressure, proteinuria, etc., they need to seek medical treatment promptly and receive appropriate treatment and monitoring.