Determining gender by blood test at 12 weeks? True or False?

Clearly I am getting very impatient to know the gender at 10 weeks. I was looking on the internet today and found quite a few woman who where recently (within the past couple of months) told the gender of their babies by a blood test at around 12 weeks, usually at the NT testing. Has anyone heard of this?

The woman were from the US, and a couple of them referred to it as the 'Jack and Jill' test. Supposedly the babies DNA is in the mothers blood.

I found this, which is few years old:

http://www.medicalnewstoday.com/articles/47868.php

You will have to skip the first few paragraphs which goes into the morals of sex selection etc to get to the testing side of it.

I know there are plenty of organisations claiming to provide this service by sending a kit out and you sent back blood from a finger prick etc. But they seem to be questionable and expensive. If I could find out at the same time as my NT testing from my own doctors, that would be so much better!

Just wondering if anyone has heard of this before?

Argh, no responses!

I am still looking into it and found this recent IG link which referred to a similar test being done with the NT testing at around 12 weeks.

http://www.in-gender.com/cs/forums/t/95643.aspx?PageIndex=2

Also in the US.

No one else has heard of this?

 My doctor told me that this was being done at some place in Houston, TX.  I don't know anything else about it, but maybe this will help you in your search.  Let us know what you find out.

 Hey Chasingdreams.  I've had it done both this time and last time.  I am in Houston, TX and the place is the Center for Medical Genetics.  It's called the Jack or Jill test.  It said boy for me last time and was right.  It said boy for me this time, and it's probably right again. :( I have a confirmation u/s in a week.  They said if it says boy, it's 99.9% right. 

Nicole