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A member asked:
Are 11week ultrasounds accurate for dating? margin of error?
3 doctors weighed in across 2 answers
Varies: The range of error for an ultrasound at that point would likely be around +/- 8 days.
Answered 9/7/2013
4.9k views
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Very: First trimester (ie, <13 weeks) are much more accurate than 2nd or 3rd trimester us'f ro accurate dating. Typically <5 days margin of error.
Answered 9/7/2013
4.9k views
Thank
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