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A member asked:
Are first trimester ultrasounds better at estimating conception or lmp?
A doctor has provided 1 answer
Better than later: A pregnancy dating ultrasound done at 8 to 11 weeks of pregnancy is pretty accurate when done by an experienced technician. The estimate can be a few days or a week off in either direction.
Answered 2/1/2015
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Related Questions
A member asked:
Dated 12 weeks 4 days on 7th Aug (first trimester), no lmp, how accurate is CRL? and is this age from conception?
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How is conception date calculated by first trimester ultrasound?
A doctor has provided 1 answer
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How often are first trimester ultrasounds off in dating conception?
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Can a conception date from early ultrasound be off 3 weeks in first trimester.
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