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A member asked:
So would a transvaginal untrasound dating me at 7 weeks 3 days be early rather than late in guessing the date of conception?
A doctor has provided 1 answer
Either: Transvaginal ultrasound early in pregnancy is more accurate than last menstrual period for dating a pregnancy. It is accurate to within plus or minus three days if performed between 10-12 weeks of pregnancy. Similar results are found at 7 weeks.
Answered 2/1/2015
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