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A member asked:
Is pregnancy dating ultrasound is always accurate? i had on 5w2d, it said 4 w5d, on 9w, it said 8w5d, on 12w, it said 12w2d - which should i believe?
A doctor has provided 1 answer
Sounds the same: By what you are describing it appears that all of the sonograms are describing the same dating calculations within the margin of error. Early sonograms have a 3-7 day margin of error. All the ones you listed are only 3 days different meaning they all are mathematically equivalent.
Answered 9/24/2016
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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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Ultrasound dating accuracy? An ultrasound at 13 weeks and 3 days would have how many days error tops?
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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?
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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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I had a 6 week ultrasound and 11 week for dating purposes, they were both high quality and put my conception on or about december 6, how accurate?
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