Can you do the Down syndrome screening at 3 and a half months of pregnancy?

Patient's question:

I carefully checked that I was pregnant while I was still away, and I went back home with my husband before Chinese New Year. When I came back, I was already 3.5 months pregnant. I don't know if I can do the Down syndrome screening. I'm afraid that if I miss the check-up time, it will be bad for the baby. Hello, can I do the Down syndrome screening at 3.5 months pregnant?

Doctor's answer:

The time for the Down syndrome screening is between the 15th and 20+6 weeks of pregnancy. You are currently about 15 weeks pregnant, so you can wait for another two weeks before going to the hospital for the test. However, it should not be delayed beyond the 20+6 weeks. When you go, bring your recent ultrasound report. Do not eat dinner or drink water in the evening. After arriving at the hospital, they will draw your blood for the test.

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