A 28-year-old female asked:
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accuracy of early ultra sound at 6 weeks. what is the acutal error margin. i did 2 us and both detect 6 weeks +- 3 days margin aadvised by dr?

1 doctor answer
Dr. Andrew Doe
20 years experience Interventional Radiology
Earlier = better: The earlier the ultrasound, the more accurate it is. Before 12 weeks the margin is days, after 30 weeks, the margin can be weeks.
Answered on Aug 20, 2013

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