A 29-year-old female asked:

Why are early ultrasounds more accurate when it comes to dating a pregnancy?

1 doctor answer • 1 doctor weighed in

Dr. Addagada Raoanswered

General Surgery 58 years experience

Yes: Yes the best and safe procedure

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5k viewsAnswered >2 years ago

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Pueblo, CO

A 23-year-old female asked:

Is a 9 week or 20 week ultrasound more accurate for dating a pregnancy?

2 doctor answers • 2 doctors weighed in

Dr. Felicia Tillmananswered

Obstetrics and Gynecology 31 years experience

9wk: Early in the pregnancy the baby grows at a certain known rate. The 9wk sonogram is by far more accurate for dating.

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4.4k viewsReviewed >2 years ago

Dr. Adam Chandler

Dr. Adam Chandler agrees1 doctor agrees

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A 23-year-old female asked:

Do early ultrasound dating scans assume conception on cycle day 14?

1 doctor answer • 2 doctors weighed in

A 29-year-old female asked:

Had to dating ultrasound before 12 weeks are they accurate to within a couple days?

1 doctor answer • 1 doctor weighed in

A 30-year-old member asked:

Ultrasound dating accuracy? An ultrasound at 13 weeks and 3 days would have how many days error tops?

1 doctor answer • 1 doctor weighed in

A 22-year-old female asked:

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?

1 doctor answer • 4 doctors weighed in

A 19-year-old female 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 doctor answers • 2 doctors weighed in

Last updated Jul 29, 2013

Found in:

Female health›Premature birth

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