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A member asked:
Is a 9 week or 20 week ultrasound more accurate for dating a pregnancy?
2 doctors weighed in across 2 answers
9wk: Early in the pregnancy the baby grows at a certain known rate. The 9wk sonogram is by far more accurate for dating.
Answered 8/12/2015
4.4k views
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9 week: As a rule, earlier ultrasounds provide more accurate dating for pregnancies.
Answered 3/4/2014
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Related Questions
A member asked:
Are 11 week ultrasound more accurate for dating conception than 6 week ultrasound, both are transvaginal?
A doctor has provided 1 answer
A member asked:
Are ultrasounds accurate at dating conception at 12 weeks?
3 doctors weighed in across 2 answers
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
A member asked:
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?
6 doctors weighed in across 3 answers
People also searched for:
I had dating ultrasound at 20 weeks (less accurate) giving me a due date of 9/6/13. Is it possible for father to be someone i had sex with 11/23/12?
Is a dating ultrasound accurate showing 8 weeks if the fetus has iugr and woman has no known LMP? Can the fetus actually be 20 weeks along and just look like 8 weeks due to iugr
Why is it better to wait until 8 week gestation versus seven weeks gestation in order to have an accurate dating ultrasound?
Had to dating ultrasound before 12 weeks are they accurate to within a couple days?
Ultrasound dating accuracy? An ultrasound at 13 weeks and 3 days would have how many days error tops?
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