Question 1

can early ultrasound help determine paternity?

Accepted Answer

Paternity: With the current technology (2014) Ultrasound shows images of the fetus during pregnancy and by itself cannot be used to determine paternity

Question 2

how far apart do 2 sexual encounters have to be to determine paternity?

Accepted Answer

DNA: The only certain way to prove paternity is through dna testing.

Question 3

my earliest ultrasound was at 8 weeks, how accurate would my results be for determining paternity?

Accepted Answer

Paternity?: The ultrasound at 8 weeks should be able to nail the date of conception down to less than plus or minus a week. As far as nailing down who the male contributor is, that is another matter. Sperm may remain viable for up to 5 days so you need to figure out when you conceived and then with whom and when you were intimate. A dna test would be definitive to answer your question.

Question 4

can paternity be determine and a correct conception date is sex between 2 different men are 5/6 days apart?

Accepted Answer

Difficult to do: It is difficult to get conception dates accurate within only 5-6 days.  Dates are usually accurate within 2 wks with good ultrasound and menstrual history.  (Women who have irregular menses are a little more difficult to get accurate dates).  In regards to paternity testing, you would need to get a DNA sample of both men and compare it to the DNA of the baby.

Question 5

is 13 days enough time span to determine paternity lmp 3/28/14 regular cycle u/s on 6/3 for 8w1d & on 6/16 for 9w5d (different place) sex 4/3 4/16-24?

Accepted Answer

No: In order to determine paternity, you would need DNA sample for the child (not likely until the child is born) and from the person you suspect is the father.  I do not know of a way to test prior to this.  The roughly 2 weeks difference in sex with different partners (?) also makes it too close to call.  Your US dates are not exact and have error of up to about a week at that gestation. Sorry;

Question 6

what are some recommended locations or labs to do non-invasive paternity testing in texas (dfw) area. what are your thoughts on the tests accuracy?

Accepted Answer

The most accurate: Test is a blood test. Physician-ordered  comparative genomic hybridization,  costs ~ $2, 000/person. Each putative father usually pays for his own & shares the cost of the newborn's test. Saliva testing by proprietary labs (e.g., 1-800-whosyourdaddy) are often inaccurate. If either putative father has a family history of an inheritable genetic disorder, his insurance may cover part of the cost.

Question 7

how far apart do sexual encounters need to be to determine paternity? without doing dna test

Accepted Answer

Paternity testing: It's hard to say exactly &amp; what if there are multiple sex partners. Most of the time, you will not know the exact day you got pregnant.  Paternity testing provides "scientific evidence" of whether a man can be the biological father of a child. Paternity is determined by making a comparison of the child's DNA with the DNA profile of the alleged father.

Question 8

is 2 months between 2 intercourses enough to determine paternity with early ultrasound? due date 23 jun. 1st intercourse 4th of aug, 2nd from 2nd oct

Accepted Answer

Yes: The margin of error in Ob ultrasound is 1 week in 1st trimester, 2 weeks in 2nd and 3 weeks in 3rd trimester.
With an 8 week difference in coital timing, with two full cycles between, it should be easy to tell who the FOB is by obtaining the due date from the US. Hope that is pleasing news ;-)

Question 9

how accurate is an ultrasound at 13+3 weeks ?  now 30 weeks and measuring 32 . worried about paternity . partners 25 days apart . due oct 10.2014

Accepted Answer

Accurate: Early ultrasounds are the most accurate for dating.  They are within 7-10 days, so partners 25 days apart would not be a problem with paternity.

Question 10

found out i was 13 wks 3 days pregnant on nov.10 so conception date is aug 7. how accurate are crown/rump measurements in days? paternity in question

Accepted Answer

Accurate: Measurements from ultrasound are more accurate that calculating age based on dates.

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Doctor answers about:

How accurate are ultrasoumd at determining paternity

A member asked:

Can early ultrasound help determine paternity?

A member asked:

How far apart do 2 sexual encounters have to be to determine paternity?

A member asked:

My earliest ultrasound was at 8 weeks, how accurate would my results be for determining paternity?

A member asked:

Can paternity be determine and a correct conception date is sex between 2 different men are 5/6 days apart?

A member asked:

Is 13 days enough time span to determine paternity lmp 3/28/14 regular cycle u/s on 6/3 for 8w1d & on 6/16 for 9w5d (different place) sex 4/3 4/16-24?

A member asked:

What are some recommended locations or labs to do non-invasive paternity testing in texas (dfw) area. what are your thoughts on the tests accuracy?

A member asked:

How far apart do sexual encounters need to be to determine paternity? without doing dna test

A member asked:

Is 2 months between 2 intercourses enough to determine paternity with early ultrasound? due date 23 jun. 1st intercourse 4th of aug, 2nd from 2nd oct

A member asked:

How accurate is an ultrasound at 13+3 weeks ? now 30 weeks and measuring 32 . worried about paternity . partners 25 days apart . due oct 10.2014

A member asked:

Found out i was 13 wks 3 days pregnant on nov.10 so conception date is aug 7. how accurate are crown/rump measurements in days? paternity in question

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