Do I still need to do another screening test if the results of the Down syndrome screening are high-risk?

Patient's question:

Today I checked the Down syndrome screening 1:27 and I'm so worried. Do I need to redo it again?

Doctor's answer:

Analysis of the condition: Hello, a high risk result in the Down syndrome screening only indicates a higher probability of having a child with Down syndrome, but it does not necessarily confirm it, and there is no need to repeat the test.
Recommendation: It is recommended that you undergo amniocentesis and blood draw for non-invasive DNA testing around the 20th week of pregnancy to rule out fetal abnormalities.