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A member asked:
Ultrasound accuracy? i had an ultrasound that dated me at 13 weeks and 3 days..how accurate would this dating be..could it be two weeks off?
2 doctors weighed in across 2 answers
Early : Early ultrasounds are now amazingly accurate. There are very rarely off by even a few days. They are very reliable indicators of gestational age, and are much more accurate than going by the date of last menstrual period.
Answered 1/16/2019
5.3k views
Yes: Ultrasound dating accuracy is best in the first trimester. After that, ultrasound dating is less accurate. Here is a link which may help you: http://www.Ultrasoundcare.Com.Au/services/pregnancy-ultrasound-5-17-weeks-dating-and-viability.Html.
Answered 2/10/2013
5.3k views
Related Questions
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Had to dating ultrasound before 12 weeks are they accurate to within a couple days?
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I had ultrasound on 01/20/14, with the baby measuring at 4.8 cm, is this accurate for a dating of 11weeks 4 days fetus?
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I have a question about a dating ultrasound? How accurate are they ? The dating based on my LMP and the date it puts me at are 10 days apart
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My dating ultrasound was not consistent with my lmp. It dated me a week further than I should be. What could be the cause of this?
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