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A member asked:

If you have sex with 2 partners 14 days apart...would it be possible to rule one out based on ultrasound dating?

A doctor has provided 1 answer

Yes: That is generally true, because the ultrasound dating is accurate within 1 week or so, and because when men are 2 weeks apart, usually only one of the men will have been there close to the time when the woman was fertile and ovulating.

Answered 3/6/2014

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Related Questions

A member asked:

With a my first ultrasound being done my doc said i was 14w3d based off ultrasound i didnt have periods just got off depo. How off can dating be?

A doctor has provided 1 answer

A member asked:

If I just had my daughter oct 16 scheduled csection at 39 weeks due date based off a dating ultrasound done at 8 weeks is there any possible way this ?

A doctor has provided 1 answer

A member asked:

I had dating ultrasound at 20 weeks (less accurate) giving me a due date of 9/6/13. Is it possible for father to be someone i had sex with 11/23/12?

A doctor has provided 1 answer

A member asked:

I had sex with two guys 10 days apart, one on 11 Feb, and one on 20 Feb. My due date was 12 Nov from ultrasound and 13 Nov from LMP.. Im not sure who the dad is?

A doctor has provided 1 answer

A member asked:

I had sex with 2 different guys 11 days apart. guy1-04/10/21 and guy2-04/22/21. couldn't remember last period but ultrasound dated me at 11 weeks 0 days on 06/28/21. who could i rule out based on that ultrasound result?

A doctor has provided 1 answer

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I have a question about a dating ultrasound? How accurate are they ? The dating based on my LMP and the date it puts me at are 10 days apart
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