A 25-year-old female asked:
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If my 14 week ultrasound puts my conception date at April 20, is this accurate?

1 doctor answer
Dr. Dale Kristle
39 years experience in Gynecology
Within 1-2 weeks: ultrasound is accurate within 1-2 weeks. your period date is usually more accurate
Answered on Jul 30, 2014
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Related questions:

A 30-year-old female asked:
Dr. Yash Khanna
56 years experience in Family Medicine
Most Accurate : According to stdies if Ultrasound is done within 20 weeks of gestation,it is most accurate.More accurate than based on last period
A 27-year-old female asked:
Dr. Jon Ahrendsen
38 years experience in Family Medicine
Possible, but ????: Using an online gestational date calculator, a due date of april 26 give the date of conception of august 3rd. This is within the limits of accuracy o ... Read More
A 36-year-old female asked:
Dr. Gerard Honore
28 years experience in Fertility Medicine
First trimester: Ultrasound measuring fetal crown-rump length is considered accurate to +/- 3 days or so. Personally i believe it is more accurate than that. Transvagi ... Read More
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A 31-year-old female asked:
Dr. Bruce J. Stringer
46 years experience in Radiology
Good Enough: Sounds like your sono dated you in the middle of the 7/18-23 range. No way was it the 7/4 window. Accuracy should be less than a week either way.
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1 thank

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