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A member asked:
Do ultra sounds add the two weeks for lmp? i had an ultra sound on april 21 showing me at 8 weeks 0 days does it mean it was 6 weeks since intercourse
A doctor has provided 1 answer
'Fudge Factor': Ultrasonography uses a 'fudge factor of plus or minus 2 weeks for accuracy. It would mean that fertilization and implantation may have occurred at the 6 week level in your case.
Answered 10/4/2013
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