Do I need to have further DNA testing after a low-risk result from the Down syndrome screening?

Patient's question:

Down syndrome screening showed low risk, except for the recommendation to consult for intergenerational inheritance. Additionally, the free HCG value was low at 0.242, with the normal value being 0.25. Should I undergo further DNA amniocentesis?

Doctor's answer:

Hello, according to your description, all the above careful examinations are only screening, because after all, they are conducted through screening, which cannot diagnose low-risk conditions and cannot guarantee 100% normality. It only means that the probability of recurrence is relatively small. The result indicating high risk does not necessarily mean there is definitely a problem; it is only used as a reference. Therefore, if other examinations are normal, you can focus on prenatal examinations. However, if there are abnormalities in other tests or a relevant family history of abnormalities, further consultation and examinations should be considered.

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