How to interpret the results of Down syndrome?

Patient's question:

Risk of Down Syndrome: 1:408
Risk threshold taken: 1:200
Risk of Open Neural Tube Defect: 1:1282
Risk threshold taken: 1:270

Doctor's answer:

Your results are all within the normal range, which means they are within the normal range, but the value at 1:408 is slightly higher. Guidance: My suggestion is that further amniocentesis is not necessary. Down syndrome screening is only an assessment method, not a diagnostic method, so there are only concepts of high risk or low risk, without a definitive statement of whether it is a malformation or not. Preventive measures include proper prenatal screening and, if necessary, prenatal diagnosis.

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