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A member asked:
How accurate are first trimester u/s in determing in due dates?
A doctor has provided 1 answer
Very accurate: If done in the 1st trimester and done via transvaginal approach, it is accurate to 5-7 days
Answered 8/10/2014
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Related Questions
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Why do they change your due date nin the second trimester if early ultrasounds are accurate?
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How accurate are first trimester ultrasounds at 8w1d & 9w5d done 2 weeks apart? And how much can it be off by?
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Do all fetuses grow the same in the first trimester? Poss for a fetus to grow small & date multiple weeks behind? Ex actually be 12w, but date 8w?
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What is the due date accuracy w/ 1st trimester ultrasound?
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What are the possible dates i concived with a due date of june 21st and I am now measuring a week ahead. Can first trimester ultrasounds be 2 weeksoff?
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