How accurate is a dating scan

Published: 02.02.2018

Read our Cookie Policy. Truth is YOUR body and your baby will decide when that delivery date is!!! Wow Ally, that's really interesting.

Adult Health Definition Adult Health Ultrasounds performed after 22 weeks gestation cannot be used to estimate the due date of the baby because the size no longer reflects the age very well.

You report a three day difference in two methods of estimating your fetus' gestational age. Hi ladies baby number 2 and long story short the date I'm due is in question. I am simply baffled that the scan shows the baby to be 3 weeks bigger than it should be. My first 12 week scan put me back to 10 weeks, but when I went in again 2 weeks later, they put me forward to 13 weeks - so it can change over just 2 weeks! The size of the baby correlates less and less with its age as time goes on. I'm 4 weeks late.

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Most women deliver the baby somewhere between 37 and 42 weeks. However, I do wonder if the scan date was accurate as he was 11lb7oz when finally arrived and has been at least a month ahead developmentally all the way along.

The scan or my dates - which should I believe? I think that babies come when they are ready..

Most accurate way to calculate the delivery date - Dr. Shefali Tyagi

For general help please read our Help section or contact us. So conception can be estimated to within 9 days of a range. So i could actually be due before the date which was given. Am J Obs Gynecol ; 1: Can I have a screening test at the same time?

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