A 29-year-old female asked:
Why are ultraound edd more accurate than your LMP edd?
1 doctor answer
Dr. Padmavati Garvey answered
29 years experience in Obstetrics and Gynecology
They are not: Ultrasound based edd were established by doing ultrasound measurements on women who absolutely knew when they conceived. Thus they are just as accurate as a very accurate lmp. Some women do not remember an accurate lmp.
Answered on Dec 20, 2012
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