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A 22-year-old female asked:

Can a first trimester ultrasound gestational age/edd be wrong by 7 weeks?

1 doctor answer2 doctors weighed in
Dr. Parul Krishnamurthy
Obstetrics & Gynecology 36 years experience
No: First trimester ultrasounds are the most accurate for estimating gestational age within +/- 7 days.
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Last updated Dec 28, 2012


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