Check if Trisomy 21 screening with a 1:94 risk is normal

Patient's question:

Check for trisomy 21 syndrome (T21) with a 1:94 risk, is it a big problem? The rest are fine.

Doctor's answer:

The results of the Down syndrome test only indicate a possibility. High-risk populations are only told that the fetus is a Down syndrome baby. Low-risk populations can also produce Down syndrome babies. The cutoff value for trisomy 21 is 1:270, and 1:94 is significantly higher than this ratio, indicating a high risk of Down syndrome. High-risk populations are simply told that the fetus is more likely to have Down syndrome, even if the test result is low-risk, this possibility cannot be completely ruled out. Therefore, pregnant women need to undergo more non-invasive tests or amniocentesis to rule out abnormalities.

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