How many weeks out can a dating scan be

Just half a millimetre at such an early stage can change your date by a week. Your week scan will be far more accurate. The sonographer then said that I was only about 4. Then at the week scan I got an EDD of 15 march, so that early scan was completely out. Well, you'd think so, wouldn't you. At around 12 weeks you can get more accurate measurements. By talking to the health care professionals you should get a clearer picture as to what is happening.

Thanks so much for your post — we always welcome feedback, positive or negative, as we always aim to make our articles as accurate and as helpful as possible. We spent a lot of time talking to sonographers before writing this article, so we're surprised that you think what they're saying is not in line with what you have studied.

We'd be really keen to know more about your studies — and what you have learned.

You're right that we did include 'anecdotal stories' in our article. We used them to illustrate the key points we were making in the articles but the quotes we used were all centred on the real experiences of pregnant women posting in our forum. We are confident that we are not using these quotes to 'misinform women', as the key points in our article were all sourced from expert monographers.


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  • Wrong due date from ultrasound scan - why it happens | MadeForMums?

It's interesting that you say that ultrasounds between 8 and 10 weeks are the most accurate. In the UK, most pregnant women don't have an ultrasound until they are at least 12 weeks pregnant. Perhaps you are based in the US, or another country, where ultrasound practice is a bit different?

Will my dating scan change my due date

We use cookies to improve your experience of our website. Skip to main content. Find us on YouTube Twitter Pinterest. Can your pregnancy scan give the wrong due date? Some of the information in this article disagrees with everything we have studied so far regarding dating pregnancies and ultrasound accuracy. An ultrasound between weeks is the most accurate, not Please do not misinform women on anectodal stories. Do drop us a line a bout your studies, please. We'd be really interested to hear more.

You need to be logged in to do this Sign In Sign Up. Measurements at such an early stage aren't accurate which is why they wait for 12 weeks to date you.


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  3. Wrong due date from ultrasound scan - why it happens | MadeForMums;
  4. Expert Jan Steward, who is director of Ultrasound Direct and Babybond, agrees that early scans carry a much greater risk of inaccuracy. We always recommend mums get a definitive dating scan closer to 12 weeks as this will be much more accurate. Just half a millimetre at such an early stage can change your date by a week.

    Your week scan will be far more accurate. The sonographer then said that I was only about 4. Then at the week scan I got an EDD of 15 march, so that early scan was completely out. Well, you'd think so, wouldn't you. At around 12 weeks you can get more accurate measurements. By talking to the health care professionals you should get a clearer picture as to what is happening.

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    Thanks so much for your post — we always welcome feedback, positive or negative, as we always aim to make our articles as accurate and as helpful as possible. We spent a lot of time talking to sonographers before writing this article, so we're surprised that you think what they're saying is not in line with what you have studied.

    How accurate is a due date that is determined by ultrasound?

    We'd be really keen to know more about your studies — and what you have learned. You're right that we did include 'anecdotal stories' in our article. We used them to illustrate the key points we were making in the articles but the quotes we used were all centred on the real experiences of pregnant women posting in our forum. We are confident that we are not using these quotes to 'misinform women', as the key points in our article were all sourced from expert monographers. It's interesting that you say that ultrasounds between 8 and 10 weeks are the most accurate. In the UK, most pregnant women don't have an ultrasound until they are at least 12 weeks pregnant.

    Perhaps you are based in the US, or another country, where ultrasound practice is a bit different?

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    We use cookies to improve your experience of our website. Skip to main content. Find us on YouTube Twitter Pinterest. Can your pregnancy scan give the wrong due date? Some of the information in this article disagrees with everything we have studied so far regarding dating pregnancies and ultrasound accuracy. An ultrasound between weeks is the most accurate, not Please do not misinform women on anectodal stories.

    Do drop us a line a bout your studies, please.