The Down syndrome screening test shows a critical risk for trisomy 21, do I need to undergo a non-invasive DNA test?

If the Down syndrome test result indicates a high risk, it is recommended to undergo amniocentesis to confirm the baby’s condition.

How to further investigate and handle a prenatal test result indicating a high risk of Down syndrome.

Pregnant women with a high risk of Down syndrome screening should undergo amniocentesis or chorionic villus sampling to further rule out the possibility of Down syndrome.

Trisomy 21 or neural tube defects, the recent prenatal test results indicate an abnormality. Further examination and maintaining a healthy lifestyle to enhance physical fitness are recommended.

The Down syndrome screening result shows that the free-hCG indicator is elevated, but when combined with other indicators, the risk values for trisomy 21 and 18 are both within the low-risk range. If there is no family history of Down syndrome, further testing is not necessary; however, if there is a relevant medical history, it is recommended to undergo amniocentesis for confirmation.

Before undergoing a Down syndrome screening test, it is important to fast for blood collection and no special preparation is required.

The Best Time for Down Syndrome Screening and an Overview of the Testing Process

The most accurate time for a Down syndrome screening is between 16 to 20 weeks of pregnancy, allowing for the detection of approximately 70% of children with Down syndrome.