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A member asked:
My ultrasound 6wks out says conception date was january 15. can i rule out the partner from jan 4 as the father?
A doctor has provided 1 answer
No: First trimester US for dates are good but not perfect and every woman has a different cycle. +/- 2 weeks are fair game for conception
Answered 2/23/2015
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Related Questions
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Four first trimester ultrasounds done at 7 8 10 12 week all come. Up with same conception date. What's it mean??
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Do ultrasounds date from conception or lmp? I.E. If they say baby measures 12 weeks, is that from conception or should that date back to your lmp?
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If ultrasounds date from conception, then why did the sonographer tell me i was exactly as far along as my LMP says? Edds were the same as well.
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