A member asked:

What is the margin of error for an abdominal ultrasound in the first trimester. around 11 weeks. would vaginal be more accurate?

A doctor has provided 1 answer
Dr. Jie Xu answered

Specializes in Obstetrics and Gynecology

Vaginal: Transvaginal ultrasound is more accurate in first trimester, with a margin of 5 to 7 days. Hope this helps.

Answered 12/10/2013

4.9k views

Thank

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