Can you really tell the gender at 13 weeks?

MrsGibb

We saw a little nub between the legs (not a side view) at our NT ultrasound today and the tech said that she'd be very surprised if it turned out to be a girl.  What are your thoughts?

cfitz16

At 15 weeks with my daughter my doctor told me she was a girl, but that I should NOT run out and buy a bunch of pink stuff.  She said it was still early.

danieleandwayne

I'd say 13 weeks is too early. We could have known super early (12 weeks), but only because we did the MaterniT21 test, which gathers the baby's DNA so they know if there are XY chromosomes or just XX. 

Abeille

https://www.baby2see.com/gender/external_genitals.html

 Sorry I can't make it clicky on my tablet.  On the bottom of the page are u/s with examples of both sexes at 14 weeks pregnant. I think your tech's guess was premature w/o a side view.

dbadura01

It's definitely not 100%, but there is the theory of the "angle of the dangle" as both genders have outside "parts" at that point.  My ultrasound tech said she used the angle of the dangle theory and tested it on 100 patients to prove to the doctor that it works.  She was only wrong once.  She guessed girl at our 12 week ultrasound based on the angle, and that has been confirmed at our 18 and 24 week ultrasounds as well.  So, I think there is something to that theory.

dhreczuck

I think you can take a good guess but that's about what it sums up to "a guess" With my first pregnancy the u/s tech pointed out boy parts at 13wks when we went for the cvs test and the cvs confirmed, so it's definately possible to see something, but this pregnancy we saw boy parts at 16wks and my OB still wanted us to confirm at 19wks with the A/S ultrasound...so you just never know for sure for sure!

TX-Bride

dbadura01:

It's definitely not 100%, but there is the theory of the "angle of the dangle" as both genders have outside "parts" at that point. 

That's what my Perinatologist went by at 13 weeks when we did the first NT scan, at 16 weeks he verified the results and the results from Amnio confirmed his initial finding that it's a boy.

kirac

At 16 weeks our tech got it wrong.  She said boy, and then genetic testing a few days later was girl.  So, it's possible to be wrong for sure.

letzgoracing81

We found out at 14 weeks...but only because of the CVS I had done.  I am not sure the results found on an ultra-sound can be very reliable that early in.

lilblt19

cfitz16:

At 15 weeks with my daughter my doctor told me she was a girl, but that I should NOT run out and buy a bunch of pink stuff.  She said it was still early.

Ditto for me at my 12 week appt. and then the MaterniT21 confirmed it was a girl.

MrsBabySmith

Side view plus Ramzi's method would be very accurate.

Ramzi's method relies upon placental location to predict gender; the study used a sample of 5376 pregnant women that had ultrasounds in 10 year period (97-07).  "Trans-vaginal sonograms were performed in 22% of the patients at 6 weeks gestation, and Trans-abdominal sonograms were used at 18-20 weeks gestation, at this time the fetal gender were confirmed in 98-99%. The fetal sex was confirmed 100% after delivery. [. . .]  97.2% of the male fetuses had a chorionic villi/placenta location on the right side of the uterus whereas, 2.4% had a chorionic villi/placenta location to the left of the uterus. On the other hand 97.5% of female fetuses had a chorionic villi/placenta location to the left of the uterus whereas, 2.7% had their chorionic villi/placenta location to the right side of the uterus."  (Full article here)