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A member asked:
How off would an ultrasound be done at 14 weeks compare to 8-11 wks?
A doctor has provided 1 answer
Less accurate: 14 weeks places you at the beginning of second trimester, which makes the ultrasound margin of error at +/- 2 weeks. Even in first trimester there is a 1 week error margin.
Answered 12/9/2013
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