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A member asked:

What do dating ultrasounds date? conception, lmp, or due date?

A doctor has provided 1 answer
Dr. Jeff Livingston answered

Specializes in Obstetrics and Gynecology

All : All if those can calculated after obtaining the gestational age.

Dr Alves and 3 doctors agreed

Answered 4/10/2014

4.2k views

Thank

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What is my dates of conception if LMP is Oct. 13 2014 and first ultrasound at 9 weeks gave me a due date of July 25 2014?

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Don't need to pinpoint conception day, but two first trim ultrasound give same due date we have no lmp to go off, how accurate is age of our baby?

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