Identical Twins with two placentas & separate sacs?

I am just curious. I have two girls in separate sacs, two placentas, but they say they don't know if they are identical.
Wouldn't they be in the same sac if they were identical?


Just curious to see how common it is to have identical twins with two placentas/sacs.

 

My girls had seperate sacs and seperate placentas, they told us they were most likely fraternal. We had them tested and they are identical. It's like a 30% chance that they are id in that situation.
Good luck!

MJ

 

I'm another one with di/di ID girls. We had assumed that they wre Frat (and looked nothing alike at birth... around 3 months they started looking more and more similiar so we decided to get them tested....)
It's not very commom -- only like 9% of all twins will be di/di ID. LIke the PP stated - 30% of all twins are ID and of that 30% only 30% of ID twins are di/di...
we'll just have to wait and see with your twins (and be sure to play the ID/Frat game if you're uncertain )
regardless... CONGRATS on making it this far and for getting some girlies (I'm quite familiar with the all boys and then twin girls syndrome - LOL)

 

QUOTE(shandy @ Oct 4 2008, 01:05 AM) [snapback]1011176[/snapback]
I'm another one with di/di ID girls. We had assumed that they wre Frat (and looked nothing alike at birth... around 3 months they started looking more and more similiar so we decided to get them tested....)
It's not very commom -- only like 9% of all twins will be di/di ID. LIke the PP stated - 30% of all twins are ID and of that 30% only 30% of ID twins are di/di...
we'll just have to wait and see with your twins (and be sure to play the ID/Frat game if you're uncertain )
regardless... CONGRATS on making it this far and for getting some girlies (I'm quite familiar with the all boys and then twin girls syndrome - LOL)



Yep! What she said.. it's possible, in fact, on this site, VERY possible!

30% of all twins are IDENTICAL twins, 70% are Fraternal.

30% of THAT 30% that are identical have their own sac and placenta: this means, you have a 9% chance of your babies being identical if they have their own sac and own placenta. Seems like low odds, but it does happen!

The tricky part is.. finding out!

Congrats on your babies!

 

As I understand it, one placenta means ID, but ID does not mean one placenta. Meaning, it depends on when the egg starts to split. If you have two placentas and they turn out to be ID, it just means they started splitting earlier than someone like myself with one placenta.

Hope that helps!

 

We just ordered a DNA test for our di/di boys. I would be super surprised if they are Frats. I've played the "post a picture Id/Frat game" here on TS and the majority say ID. So let us play when you have them. Also you can have their blood type tested at the hospital (way cheaper than a DNA test), if they have different blood types they are Frats. If they have the same blood type they could be either. So unless there are obvious differences in hair color, sex, facial features, etc. you won't know until they are tested.

 

I have di/di ID boys.

 

QUOTE(PJ @ Oct 4 2008, 12:41 PM) [snapback]1011582[/snapback]
I have di/di ID boys.

I also do.

 

ID twins can have 2 sacs & two placentas or share a sac and a placenta or share either sac or placenta.... What they share on the inside definately does not tell you if they are ID or frat... A common misconception!

 

Di/di ID boys here as well. It's a very common misconception. I've educated a number of people IRL including a nurse There are even women on the boards here who were misinformed by their doctors.

 

Di/Di ID boys here, the docs and nurses all had me convinced my boys were frat until we had them tested. ID for sure.

 

QUOTE(PJ @ Oct 4 2008, 12:41 PM) [snapback]1011582[/snapback]
I have di/di ID boys.


So do I! I was told fraternal. We had them tested, they are definately ID.

 

This is all new to me to. like i thought one sac ment had to be id. but we are not having id, one is boy and one is girl for sure, but they share one placenta. i had no idea there was so much to all of this. im glad im not the only one learning new things.

 

QUOTE(mollyjm+2 @ Oct 5 2008, 12:22 AM) [snapback]1012166[/snapback]
This is all new to me to. like i thought one sac ment had to be id. but we are not having id, one is boy and one is girl for sure, but they share one placenta. i had no idea there was so much to all of this. im glad im not the only one learning new things.


Fraternal twins don't share a placenta or sac. They sometimes implant closely enough that their placentas "fuse" meaning one overlaps the other. If they happen to implant very closely, it can be difficult to tell with a visual inspection whether you're looking at a single placenta or two that have fused. A microscopic examination by a pathologist can tell, though. But in your case, the gender makes it almost certain to be a di/di pregnancy.