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A member asked:
How accurate are ultrasounds in determining due date?
A doctor has provided 1 answer
Depends on dates: The ultrasound (us) is the most accurate way we have of deciding how pregnant you are. There is a variation in us accuracy due to how we measure and who is measuring, but the accuracy is about 3-4 days before or after the measured size until about 10 weeks, plus or minus a week to about 14-15 weeks, then gradually changing up to a 3 week range in the last 2 months of pregnancy.
Answered 8/20/2014
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Had a ultrasound at 5wks 4 days may 21st that's how they did my due date is that accurate?
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