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A member asked:

How accurate are second and third trimester sonogram measurements in figuring date of conception?

A doctor has provided 1 answer

Not good: As pregnancy progresses, the ability to date the pregnancy becomes less and less accurate.

Answered 5/25/2013

5.3k views

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Related Questions

A member asked:

When they do scans in first trimester by crl upto 13 weeks are these the most accurate measurements +/- 5 does this mean conception dates accuracy?

A doctor has provided 1 answer

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?

2 doctors weighed in across 2 answers

A member asked:

Can you figure out conception date from six week sonogram? How accurate is it?

A doctor has provided 1 answer

A member asked:

My first second and third trimester utrasounds give me a conception range of aug 24 28 is this accurate 10/21 10 weeks 3d 12/31 20wks 3/20 31wks3d?

A doctor has provided 1 answer

A member asked:

LMP was Feb 18, I have shorter cycles of 25/26 days. 3 first trimester ultrasounds gave me a due date of Nov 19-21 putting conception at Feb 27-29. How accurate are these conception dates? Anyway conception occurred before February 20?

A doctor has provided 1 answer

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People also searched for:

When sonograms are done in 2nd and 3rd trimesters, are those based on LMP or by growth? I'm trying to figure conception date
How is conception date calculated by first trimester ultrasound?
Can a conception date from early ultrasound be off 3 weeks in first trimester.
Are conception calculators online accurate based off first trimester ultrasound?
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