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A member asked:

Is lmp more accurate than early ultrasound?

5 doctors weighed in across 2 answers

No: Early sonograms are more accurate than lmp.

Dr Ali and 2 doctors agreed

Answered 7/27/2013

5k views

Thank
Dr. Joseph Accurso answered

Specializes in Radiology

No: Measuring the crown rump length of the embryo between 6 and 13 weeks by ultrasound is the most accurate dating, +/- 8%. However, LMP dating is quite accurate, especially in women with very regular periods who know when they had sex around the time of conception.

Dr Ali and another doctor agreed

Answered 2/13/2015

5k views

Thank

Related Questions

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I have two due dates based on my LMP and and ultrasound. Which one is more accurate?

A doctor has provided 1 answer

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I don't remember my lmp. My 12w4d ultrasound dated it. How accurate is that date? It's very important.

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A member asked:

My due date based on a 7w1d ultrasound is Sep. 2nd but my LMP is Aug. 13th. Which due date is more accurate.

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A member asked:

What does it mean if LMP and early ultrasound match by 5 days? Does that mean i for sure conceived within + or - 7 days of that date?

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A member asked:

I had an ultrasound at 8 weeks 4 days Nov 14th, with a due date of june 22nd. My LMP was September 19th.. which date is accurate ultrasound or LMP?

3 doctors weighed in across 2 answers

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People also searched for:

How accurate is an early ultrasound? On 6/15/18 baby measured 5w6d. Between what dates could conception of happened? LMP 5/5.
How do you know if your due date is accurate? (ultrasoud, multiple ultrasounds give same date, lmp, etc?)
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Is conception more accurate based off LMP or 9 week ultrasound?

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