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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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How To Determine The Paternity Of The Fetus?

I'm six weeks pregnant I had sex one time with a guy sense my last period he didn't use the pull out method then I had sex about 15 times with my boyfriend sense my last period but he used the pullout method every time just wondering if one is more likely the dad than the other
Thu, 25 Jun 2015
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General & Family Physician,  's  Response
Hello!
Thank you for asking Healthcaremagic!
Brief answer: You can make a prenatal paternity test.
Answer: Prenatal paternity test consists on getting a hold of fetal DNA.
-One method is amniocentesis. In this procedure, a needle is inserted into the amniotic sac and fluid is withdrawn. This fluid contains a lot of fetal DNA, it is normally done between the 15th and 18th week of pregnancy.
-Other methods use the fact that there is a bit of fetal DNA floating around in the plasma of mom’s blood. These tests have the advantage that they are noninvasive and can be done much earlier in pregnancy…sometimes as early as 8 weeks. The disadvantage of the early tests is that they aren’t always as accurate as we’d like.
-Recently a couple of new tests have come on line that appear to be much more accurate. Both use the fetal DNA found in mom’s blood but use novel strategies to improve accuracy.
Hope this helps!
Dr Suela
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How To Determine The Paternity Of The Fetus?

Hello! Thank you for asking Healthcaremagic! Brief answer: You can make a prenatal paternity test. Answer: Prenatal paternity test consists on getting a hold of fetal DNA. -One method is amniocentesis. In this procedure, a needle is inserted into the amniotic sac and fluid is withdrawn. This fluid contains a lot of fetal DNA, it is normally done between the 15th and 18th week of pregnancy. -Other methods use the fact that there is a bit of fetal DNA floating around in the plasma of mom’s blood. These tests have the advantage that they are noninvasive and can be done much earlier in pregnancy…sometimes as early as 8 weeks. The disadvantage of the early tests is that they aren’t always as accurate as we’d like. -Recently a couple of new tests have come on line that appear to be much more accurate. Both use the fetal DNA found in mom’s blood but use novel strategies to improve accuracy. Hope this helps! Dr Suela