ULTRASOUND AT 13weeks 5 days accurate for gender?.

Pregnant75 · July 2014

Hi, Well I was at the doctor's today doing an ultrasound and I asked about if she could see the gender. She said it looked like a "girl" but was not sure cause the cord was in between and might be hiding the boy part. She said about 60% chance it is a girl. But when she showed me it looked like a girl with the three lines. Any ideas? Is it too early to tell?

mandyreads · July 2014

I was 14 weeks on the 23rd and I thought I saw boy parts. but the tech said that it could be the cord. this was the first time out of all my pregnancies that I could even tell what I was looking at. but yeah, not too early. I will know for sure come the 20th of Aug.

ladylisalt · July 2014

Pregnant75 said:

Hi, Well I was at the doctor's today doing an ultrasound and I asked about if she could see the gender. She said it looked like a "girl" but was not sure cause the cord was in between and might be hiding the boy part. She said about 60% chance it is a girl. But when she showed me it looked like a girl with the three lines. Any ideas? Is it too early to tell?

curious what you mean by the 3 lines.

I feel like this early on the techs want to "play it safe" for liability reasons so they don't mislead you. I remember 3 years ago when I was having my DS at the first US the tech said, "it looks like a boy" and it drove me nuts because it wasn't 100% until follow-ups. Good luck!

mandyreads · July 2014

If you google 13 wks or 14 week u/s pics...lots say Girl or Boy. My friend found out that early with her boy.

Samuelismomma · July 2014

I found out early at 13 wks dr, not tech tol me he was a boy and she had never been wrong:) different country not USA, so she wasn't worried about liability! Lol

MsMacual · July 2014

I found out with my first via an u/s at 14 weeks. The tech said boy and our 20 week u/s confirmed. I also found out around the same time with my second, but the u/s tech wouldn't even give a guess. I had the Verifi test done and it gives sex at 99% accuracy.

My understanding is that 3 lines in the genital area are the three folds of the vagina.

ksgsmu · July 2014

First I knew the sexes of the babies before we transferred them due to pgd testing. My MFM at our 13 week appointment did not know and he wanted us to not say to see if he could tell and was right. We agreed. He guessed correctly (boy) on one twin but said the second twin was turned away and he wasn't sure but said if he had to put money on it another boy. He was right on both. Now MFMS have much better sono machines typically than OBs....

either way they have a 50% chance of being right

alexesq33 · August 2014

My ultrasound tech offered to tell me at my 13/14 week u/s.

My husband wasn't at that one so we waited until the 20 week one... but she had written it down and was right on both babies.

So I guess for some it's not too early, depending on position.

mstfd · September 2014

Early ultrasounds ARE highly reliable...

Ultrasound Obstet Gynecol. 2006 Jun;27(6):619-21.
Fetal gender assignment by first-trimester ultrasound.
Efrat Z1, Perri T, Ramati E, Tugendreich D, Meizner I.
Author information
Abstract
OBJECTIVE:

Ultrasound determination of fetal sex can benefit decision-making regarding invasive prenatal testing in pregnancies at risk of sex-linked genetic abnormalities. The aim of this study was to assess the accuracy of fetal sex determination by ultrasound at 12-14 weeks of gestation in a large cohort.
METHODS:

Fetal gender assessment by transabdominal ultrasound was performed in 656 singleton pregnancies at 12-14 weeks of gestation. The genital region was examined in the mid-sagittal plane. The angle of the genital tubercle to a horizontal line through the lumbosacral skin surface was measured. The fetus was assigned male gender if the angle was > 30 degrees , and female gender if the genital tubercle was parallel or convergent (<10 degrees ) to the horizontal line. At an intermediate angle of 10-30 degrees the gender was not determined. Crown-rump length (CRL) was measured in all cases.
RESULTS:

Gender assignment was possible in 613 of the 656 (93%) fetuses. Gender identification according to CRL was feasible in 85%, 96% and 97% of the fetuses at gestational ages of 12 to 12 + 3, 12 + 4 to 12 + 6 and 13 to 13 + 6 weeks, respectively. Phenotypic sex was confirmed in 555 newborns. The accuracy of male gender assignment in this group was 99-100% at all ages, and that of female gender assignment was 91.5% at 12 to 12 + 3 weeks, 99% at 12 + 4 to 12 + 6 weeks and 100% at 13 to 13 + 6 weeks.
CONCLUSION:

Prenatal gender assignment by ultrasound has a high accuracy rate at 12-14 week

lgsdesigner · September 2014

It's possible, but I wouldn't go painting the nursery pink just yet.

jcdorsey74 · September 2014

Yep, I knew at 14 weeks with my DS that he was a boy. He very nicely, spread his legs and I could definitely see a twig and giggleberries. I actually yelled out, "It's a boy," right before the tech did. My husband still didn't recognize it, even after the tech circled it and printed a copy out for us. I guess he wasn't used to looking at it from the rump side. :-)

MrsDL · September 2014

Can sex determination at 13 or 14 weeks be accurate - yes. Is it normally (during the NT scan) - not really. Techs and Docs are not looking at anatomy in detail and like one pp posted - boys and girls do look very similar at this stage. While another poster noted a scientific study with high accuracy - it sounds like the study was done to confirm specifically whether or not sex can be determined this early, so the researchers were likely using high tech equipment (not all ultrasound equipment and centers are the same in level of advancement) to specifically look at sex determination and accuracy which is NOT AT ALL the same as determining the accuracy of sex at a standard NT scan - KWIM?

A 60% guess isn't that high in terms of confidence - your doc has a 50% chance of getting it correct at your first visit before any ultrasound. Your anatomy scan at around 20 weeks will be much more accurate - no harm in waiting before you plan/buy/tell. With this pregnancy, I had M21 so I found out at 10 weeks it was a boy - confirmed at anatomy scan. But my doctor and tech said even these tests, that are looking at actual chromosomes, are not 100%. We still waited until our anatomy scan confirmed it, although we were told that errors with M21 tend to go girl later finding out it's a boy rather than boy turning to confirmed girl.

GingerMommy315 · September 2014

We didn't ask at our 13 week NT scan last week because the picture was so blurry that I could barely make out the arms and legs. We decided that unless they could give us a pretty accurate answer, we'd rather wait. Knowing that there was a 60% chance...or a 70% chance would drive me crazy.

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