A member asked:

1st u/s was done@12wks (but measured12w+4d) then the 2nd one, based on lmp, the u/s tech said 17w+4d, but then said i was measuring 18w. accuracy?

A doctor has provided 1 answer
Dr. Liza Kunz answered

Normal: There is no need to change your dates if there is less than 1 week difference between you LMP dates and that 12 week ultrasound.

Answered 2/13/2015

5.3k views

Thank

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