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How accurate are ultrasoumd at determining paternity

A 37-year-old female asked:
Dr. Jeff Livingston
21 years experience in Obstetrics and Gynecology
Not in your case : If the test results for you were "indeterminate" then that means you will not be able to draw any conclusions from those results.
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A 24-year-old female asked:
Dr. Rashed Hasan
30 years experience in Pediatrics
Paternity: With the current technology (2014) Ultrasound shows images of the fetus during pregnancy and by itself cannot be used to determine paternity
A 31-year-old female asked:
Dr. Martin Raff
55 years experience in Infectious Disease
DNA: The only certain way to prove paternity is through dna testing.
A 30-year-old female asked:
Dr. Bruce J. Stringer
46 years experience in Radiology
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 co ... Read More
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A 38-year-old female asked:
Dr. Mary Bergum
19 years experience in Family Medicine
US dating: The earlier the ultrasound the better the dates.
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A 55-year-old member asked:
Dr. Carl Decker
23 years experience in Radiology
Depends: 1st trimester +\- 5 days 2nd tm +- 10 days 3rd tm +- 21 days.
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A 55-year-old member asked:
Dr. Fred Coleman
46 years experience in Maternal-Fetal Medicine
Depends on dates: The ultrasound (us) is the most accurate way we have of deciding how pregnant you are. There is a variation in us accuracy due to how we measure and w ... Read More
A 38-year-old female asked:
Dr. Bruce J. Stringer
46 years experience in Radiology
The most accurate: The earlier you get your first ultrasound, the more accurate is the estimate of your due date and the age of the pregnancy. During the first trimester ... Read More
A 30-year-old female asked:
Dr. James Ferguson
45 years experience in Pediatrics
Depends: The precision of an ultrasound depends somewhat on the equipment, the technician, the interpreter & the reason for study. If the scan is done to verif ... Read More
A 54-year-old female asked:
Dr. Robert Kwok
32 years experience in Pediatrics
Urine test is better: Testing one's urine is so simple and so accurate that there is no reason to bother with an online survey. An online test cannot give a definite answer ... Read More
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A 37-year-old female asked:
Dr. David Krulak
22 years experience in Family Medicine
Amniocentesis: Amniocentesis is the most accurate way to determine the baby's gender before birth, with about 99.4% accuracy.
A 30-year-old female asked:
Dr. Brian Enggano
11 years experience in Obstetrics and Gynecology
Very accurate: Ultrasounds tend to get more inaccurate as your pregnancy progresses. First trimester ultrasounds are more accurate than second trimester ultrasounds ... Read More
A 51-year-old female asked:
Dr. Arthur Ollendorff
27 years experience in Obstetrics and Gynecology
Ultrasound dating: All due dates are estimates and OB providers typically use the due date calculated from the last normal period to determine a woman's due date. An ear ... Read More
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A 34-year-old female asked:
Dr. Robert Killian
27 years experience in General Practice
Early Ultrasounds: Early ultrasounds are thought to be the most accurate.
A 34-year-old female asked:
Dr. Seth Derman
32 years experience in Fertility Medicine
Depends when: Early ultrasounds (before 8 weeks) are accurate within about 3 days. As time goes by, ultrasound measurements become less useful in determining your d ... Read More
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A 24-year-old female asked:
Dr. Robert Grindstaff
37 years experience in Addiction Medicine
Ultrasound : The ultrasound is pretty accurate and several throught the pregnancy till be more so
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A 32-year-old female asked:
Dr. Jay Bradley
17 years experience in LASIK Surgery
Baby size: Dates are based on size measurements of baby and back calculated.
A 40-year-old male asked:
Dr. Gregory Hines
23 years experience in Family Medicine
Mostly accurate: Ultrasounds at that point in your pregnancy is generally accurate. Remember, however, that the presence of a penis to diagnose a male is generally ea ... Read More
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A 31-year-old female asked:
Dr. Liza Kunz
Dr. Liza Kunz answered
20 years experience in Maternal-Fetal Medicine
Yes, fairly accurate: The margin of error on a dating scan at 13 weeks is approximately 7 days.
A 39-year-old member asked:
Dr. Joseph Woods
27 years experience in Pathology
No known stats.: First, this is not the ultrasound usually done today, transvaginal is. This is done with a manual pelvic exam and ca-125 levels. Second, there has n ... Read More
A 39-year-old female asked:
Dr. Gerard Honore
28 years experience in Fertility Medicine
Yes and no: They are accurate, but only to around +/- 3 weeks.
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A 30-year-old female asked:
Dr. Meena Khandelwal
34 years experience in Obstetrics and Gynecology
Accurate!: 1st trimester ultrasounds are very accurate - have correlated with timed ivf pregnancies. We usually consider 1st trimester scans accurate within 5- ... Read More
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A 25-year-old female asked:
Dr. Robert Killian
27 years experience in General Practice
Being Pregnant: Yes. The early ones are thought to be more accurate than later in pregnancy. You can verify dating with a conception calculator. Remember all the to ... Read More
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A 38-year-old male asked:
Dr. Craig Keathley
23 years experience in Obstetrics and Gynecology
Pregnancy dating: I assume you are talking about ultrasound measurements. The accuracy depends on when the ultrasound is performed-- an early ultrasound (8-10 weeks) i ... Read More
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