Multiples

DNA Testing for Twins

I was just reading some previous posts and saw one about DNA testing for twins.  I was thinking of getting it done for my boys - although they don't look like it in the sig pics, they REALLY look alike now.  Andrew had pyloric stenosis, which put him behind his brother in gaining weight and was already a pound lighter than Michael at birth, so he was quite a bit smaller but is now catching up and I swear they are identical now.  We didn't have the placenta testing done, so now that we are starting to wonder...what all is involved the the DNA test?  Is it just a blood draw?  Also, are there any advantages to knowing if they are identical (other than just to know?)

thanks!

-Jen

Re: DNA Testing for Twins

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