Early Pregnancy Signs and Symptoms Forum - Accuracy of the Ultrasound
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Accuracy of the Ultrasound

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ESCO49

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Joined: 14 Dec 2007
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Accuracy of the Ultrasound
Posted: 12-14-07 13:21pm

My girl left the doctor's office with an ultrasound picture that said the baby was 12wks. 2 days before she left the doctor office said there may have been a miscalculation and that she was approx. 8 wks and 5 days and that they would call her in two days. Is this common practice. Also, can an ultrasound be that off.
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Ingi

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Posted: 12-14-07 13:23pm

So she doesn't know when her last period was? That is a whole month difference. An ultrasound is far more accurate than that.
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mominashoe

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Posted: 12-16-07 09:54am

Wow that is a lot of discrepancy. By mid-pregnancy, an ultrasound will have only a "give or take a week" error, and usually it's only a few days.

The only thing I can think that would make it that much of a difference (besides a REALLY gross lab error) is if the baby isn't growing the way it should if you know what your due date is.
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