Why do we say 12 week genderscans are too early?

[Mathilde]

In my desperation I've been googling around trying to look for weaknesses in the nub theory and it is more often wrong when girl is predicted than boy, I whish it was opposite but I do come across many replies saying 12 weeks is way to early, in my eyes it isn't when comparing to accuracy. Comments?
Mathilde

[BeadinMom]

The theory is that the boy nub could still rise....in other words, it could LOOK like a girl, but actually be a boy.
And since I've gotten a lot of girl guesses on my nub shot that was done at 12 weeks, 3 days, I know exactly how you feel!!! LOL
Good luck!!!

[Smiley13]

The theory is that the boy nub could still rise....in other words, it could LOOK like a girl, but actually be a boy.
And since I've gotten a lot of girl guesses on my nub shot that was done at 12 weeks, 3 days, I know exactly how you feel!!! LOL
Good luck!!!

Any idea when the nub is supposed to stop rising?

[BeadinMom]

I've read it's usually a done deal by 13 weeks...hopefully someone with more knowledge & experience will be able to chime in, too.

[atomic sagebrush]

It's more than just the accuracy of the nub shot itself though. It's harder to get a good picture at 12 weeks too. And so that leaves people peering at grainy ultrasound photos when if they had just waited a few more days they would pretty much know.

Personally I don't find the 12 week shots at all accurate. Sure, some of them end up being correct but random chance would have some of those ending up being correct.

I think everyone should wait until 13 weeks because it's more trustworthy and reliable.

[nuthinbutpink]

It's a THEORY. It's not exact because the baby is only 12 weeks. Nothing is 100% at 12 weeks!

[Smiley13]

I've read it's usually a done deal by 13 weeks...hopefully someone with more knowledge & experience will be able to chime in, too.

I hope so!