SERIOUSLY?!?!?! MaterniT21 WRONG??!!??

Ok so I am almost 15 weeks now and had to go for another u/s b/c I have a low lying placenta and a SCH that has been making bleed for the last 8 weeks on and off. The tech today was looking more closely at the baby and so I said, "we already know he's a boy, can you just make sure all is well w/ the boy parts?" So she was looking and she was like "I'm not convinced this is a boy honey". What???? She told me that I would have to wait a few more weeks to get definite confirmation but that it didn't look like a boy to her. Now I am seriously freaking out b/c we have had the results from the MaterniT21 for like 3 weeks now and I have actually kinda fallen in love with the idea of having another son after initially feeling pretty disappointed. I mean don't get me wrong, I would be tickled if it's actually a girl but now I am wondering if everything is ok developmentally and how this genetic test could be wrong?? Does that happen?? Has anyone heard of that happening?? I feel like I am starting all over again!!

Happened with another member on the Harmony test so it is possible!

It supposedly happened with someone else HOWEVER I do not believe their baby is here yet and I still think the blood tests are MUCH MUCH more accurate. Human error does always occur but I would still operate under the assumption it's a boy.

I think they're 99% effective aren't they? So wrong 1 in every 100 cases but I would still want another scan. I would consider an elective one just to be sure in a couple of weeks xxx

At almost 15 weeks, I'd take that with a grain of salt. There is a reason most places won't even guess until 16 weeks, and some even later. Things develop at different rates and a clear pic of such a small area can be hard to come by. I'd just confirm down the road. By 20 weeks, a thorough check (with a full-on potty shot) should be definitive for gender. It's possible the Materni21 was wrong, however the chances that the tech is wrong is much higher. I bet it's tough to be in limbo though :-/

Thanks girls! I know the nurse told me when I got the results that it had like 99.5% accuracy or something like that. We have a name picked out and I feel like I am at peace with having another boy and then trying for a 4th baby at some point. I was not at all prepared to hear that yesterday! I just wanted to know that all was developing right b/c I'm such a Martha lol and just really want to know that he is ok in there!

Just wanted to update this thread. Kellbell had her 20 week uls and it is a boy:)

I really wish uls techs wouldn't make comments unless they are 100% sure about what they are seeing. I am sure this tech was tying to say to her that it is hard to tell at 15 weeks but, something like that said in passing can be upsetting!!

Thanks Wanting!!

The genetic counsellor I worked with, who knows Maternit21 very well, told me that her friend, who is a genetic counsellor at Sequenom, told her (lots of whisper-down-the-lane, I know) that they get at least 15-20 gender mistakes per week if they are processing 2000 blood samples per week. This is in line with the accuracy rates they publish (based on a single study) but SOMEONE, somewhere has to be in the small minority of test users who get wrong results. These tests are highly accurate, but not perfect, and gender mistakes are always possible. They're unlikely, but that doesn't mean they never happen.

We are years down the road with these tests now and I think we can say pretty definitively, that they WORK pretty darn well. Rumors and innuendo about what tech or counselor said something to who, when, where, and why, is NOT EVIDENCE. People who had cryptic ultrasounds the techs couldn't read or a tech that disagreed, and are then using that to debunk these tests - also not evidence. We have had people show up on the site, make claims about how these tests were wrong because their ultrasounds didn't agree but NONE OF THEM EVER CAME BACK TO UPDATE when their baby actually arrived.

There may be some distant possibility that some of these tests are not correct for gender and the company quotes about 1% error rate. But they are much, much more reliable than ultrasounds and please do not allow these threads with no actual data in them, to give you false hope or false despair. If you had a Nip-t/Nifty test done, the odds are sky high that it was correct for gender. We have techs guess wrong on ultrasounds every day around here, of all gestations. If the ultrasound doesn't agree, it's much more likely that the ultrasound is wrong and not the Nip-t/Nifty tests.