Question
When is it best to do a Down syndrome screening during pregnancy?
Answer
Generally, it is most appropriate to conduct a Down syndrome screening between the 15th and 20th weeks of pregnancy. This test is primarily to assess the risk of the fetus having Down syndrome or other chromosomal abnormalities. If the results show a low risk, no further tests are needed. However, if the risk index is high, non-invasive DNA testing or amniocentesis may be required to determine the health status of the fetus.