My genetic counselor implied that the new tests are just too darn new, and the NT scan has 20+ years of experience backing it up, so I wasn't given the choice. I do agree that these new blood tests will replace all prenatal testing in the future, sadly too late for me as this is our last time at the rodeo.
Good luck, everyone else, with your tests!
I am not getting any prenatal testing this time but I like what I have read about the maternityT test. Its not invasive and still can give you a really good idea about things that many parents today want to know. Alot of the optional prenatal tests can be potentially harmful to baby, it would be great if a test of mom's blood would make those less necessary. Besides which, if I thought you could actually get the same basic accuracy of gender from a blood test, I would consider getting it myself. You need your blood drawn anyways. It'll probably be on the list of things to do next baby if its still getting postivie results overall.
I had my NT last week and my doc said it all looked normal. I have to say that I didn't realize how much I was internally stressing about it, and how relived I am that I went ahead with getting the scan (which for me involved a lot of travel) even though my partner didn't feel it was necessary. I'm sure some of why I'm feeling better this week is that I'm physically getting over the 1st trimester symptoms, but since I had the scan I just feel so much more reassured and fantastic about this pregnancy, and excited to go forward.
Manysplinters, I completely understand. I mentioned in another thread how I do the prenatal testing every pregnancy because it gives me peace of mind and confidence in the pregnancy and in life in general. I realize there's a chance it may backfire, but so far we've been fortunate and the testing has brought us nothing but reassurance. And it's a bit of a fuss for me to get to the testing site too, especially with the kids now.
My midwife referred me to a geneticist who will most likely do the materniT21. My appointment is Thursday. I did a little research, and it sounds like it is not always accurate on baby's gender--what they are looking for is abnormal sex chromosomes; with normal ones there's some margin of error. So it will be interesting to see what it says about that, but I won't take it as certain information.
That is interesting @EnviroBecca, I hope the materniT test becomes more accurate about gender before my next baby. Blood tests instead of all the ultrasound and poking belly tests sounds GREAT. We realllllly want to know what we are getting this time, the suspense is killing me! I had read it was as accurate as ultrasound in determining gender (remember the baby doesn't always let you see anything in an ultrasound, both of our girls kept thier legs crossed).
I wonder why some mamas are told to wait until they are 35 before they can just straight get it, it seems like it would be less expensive to do a blood test than to do the other tests? They already have to take blood.
Most blood tests are done in your local lab. MaterniT21 is done only in one lab in California. Your sample has to be sent there for testing, and it sounds like they use some kind of special equipment to distinguish baby's cells from your cells in your blood. (I am mystified that this is possible at all--I'm going to ask for more explanation!) So there are shipping expenses plus the fees of the ONE company that does the test.
Still, my insurance company calmly said that it is covered. I don't know if that's because of my age or they're covering it for anyone.
I had my blood drawn today. The genetic counselor told me that it's not that baby's CELLS are floating around in Mom's blood; they are "free-floating fragments of DNA". This actually sounds more alarming in a way, but also less alarming in that our blood is not mixing. (I have Type O blood, and my partner has Type B. Our son also has B, and this baby has at least a 50% chance of it. But as far as I know, because the bloods don't mix during pregnancy, the only problem it can cause is jaundice after birth.) Anyway, apparently these fragments are a normal thing. It sounds like what they do with this test is scoop up all the chromosomes and sort them out and count how many each of 13, 18, 21, X, and Y. Extras of 13, 18, or 21 indicate those trisomies (Trisomy 21=Down syndrome) and Y chromosomes indicate a boy. Something about the number of X and Y tells them if baby has a sex chromosome disorder--she wasn't too clear about how that works.
It all sounds very sophisticated and makes me wish I'd had a better biology class!
Praying for good test results...and hoping for a girl...although I am almost daily reminded that the boys I have (partner and son) are such a nice type of boys that if we have another boy he'll probably be that kind too.
I'm getting the MaterniT21 done next week because with two other children, I want to know what I need to prepare for! Can you opt-out of finding out the sex of the baby? I really don't want to know until the baby is born and I don't like the idea of the information floating around in my file somewhere with the possibility that I might find out!
I have my blood work and NT u/s scheduled for next week, but am still debating on whether or not I should have it done. I'm 29 and do not have any genetic risk factors that I'm aware of (from me or my husband). I've been reading that u/s can cause damage to cells and that it's best to limit baby's exposure to them. Many women have posted in other DDC threads that they are only doing the 20 week u/s to limit exposure. I already had a vaginal ultrasound at 10 weeks so am a little nervous about doing another one next week, plus the 20 week, plus later ones that may be done. What are your thoughts on negative effects of u/s on the baby? I think I'm stressing more about the u/s than what the test results could be!
Thanks in advance.