Down syndrome screening is one of the necessary examination items during pregnancy, mainly to detect the probability of the fetus suffering from Down syndrome. If the probability of the fetus suffering from Down syndrome is relatively high, pregnant women can consider whether to terminate the pregnancy. But what if I forget to do Down syndrome screening during pregnancy?
If pregnant women forget to undergo Down syndrome screening, doctors generally do not allow them to undergo a second follow-up examination. The best time for Down syndrome screening is between 15 and 20 weeks of pregnancy. In this case, pregnant women have to do some routine examinations regularly, as long as there are no abnormalities in the routine examinations.
If pregnant women are really worried, they can do non-invasive DNA testing. Non invasive DNA testing can be done between 12 and 28 weeks of pregnancy, and the accuracy and comprehensiveness of non-invasive DNA testing are also good. However, the cost of non-invasive DNA screening will be higher than that of Down syndrome screening. Down syndrome screening requires 2ml of venous blood to be drawn from pregnant women, but it needs to be done on an empty stomach, and the test results are relatively fast, usually detected within 24 hours.
The purpose of Down syndrome screening is to timely avoid the risk of fetal Down syndrome. The timing of Down syndrome screening should not be advanced or delayed, as this will affect the screening results. If the screening result report confirms that it is high-risk, it is best for pregnant women to undergo amniocentesis surgery.
