What is the risk of critical risk for trisomy 21?

Patient's question:

I got the Down syndrome screening, and it shows critical risk for trisomy 21, while the rest are low risk. I'm wondering how big this risk is and if I should get another test.

Doctor's answer:

Based on the above situation, in this case, the critical risk value should be considered higher than the low-risk value in terms of the prevalence rate. Further non-invasive DNA testing or amniocentesis should be conducted, and repeated Down syndrome screening is not recommended. It is advised to maintain a proper diet, consume less spicy and cold/hard foods, and eat more fresh vegetables and fruits. It is also recommended to stay in a good mood, reduce stress, and not worry too much.

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