2 doctors weighed in:

My OBGYN isn't going off my lmp March 24th. Why does my sonogram date back to April 15th.

2 doctors weighed in
Dr. Ralph Boling
Obstetrics & Gynecology
1 doctor agrees

In brief: Sono more accurate

variations in ovulation day, cause us to use sonogram measurement of the baby to determine a more accurate due date.


when the date estimates are close, no change in due date, when difference is larger, use the sonogram estimated due date.

In brief: Sono more accurate

variations in ovulation day, cause us to use sonogram measurement of the baby to determine a more accurate due date.


when the date estimates are close, no change in due date, when difference is larger, use the sonogram estimated due date.
Dr. Ralph Boling
Dr. Ralph Boling
Thank
Get help from a real doctor now
Dr. Jane Van Dis
Board Certified, Obstetrics & Gynecology
14 years in practice
47M people helped
Continue
108,000 doctors available
Read more answers from doctors