system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 24-year-old patient presents to OPD at 18 weeks of pregnancy with a previous history of a child with Down syndrome. The most appropriate is
assistant
The correct answer is  "Tripple test gives risk ratio and for fuher confirmation amniocenteses has to be done" Tripple test (MSAFP, hCG, UE3) it is performed at 15-18 weeks while amniocenteses in performed at 16 weeks of pregnancy