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A member asked:
Can ultrasound be off by 3-4 weeks could you be 14-15 weeks but measure 11-12 weeks?
3 doctors weighed in across 2 answers
No: Us is usually accurate, rule out growth retardation.
Answered 5/11/2013
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It's possible.: I'd rely more on the ultrasound findings than your recollection of your last menstrual period in determining your fetal age.Best wishes!
Answered 12/28/2014
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