Pregnancy & Birth Clubs <
10/04/2013 at 16:53
Hope you don't mind me posting this and not sure if anyone will be interested but I wanted to share my experience yesterday especially as there doesn't seem to be a lot of information about this available at the moment. I posted a week or so ago, asking if anyone had any experience of the Harmony Test which tests mainly for DS but I managed to find a long thread on Mumsnet about it. It's essentially a (relatively new) blood test which analyses the fetal DNA in the mother's blood, so they can make a much more accurate risk factor for Downs without the need for amnio or CVS. As I wasn't considered high risk but felt that I wasn't really low risk either (I am 36 and nuchal results as 1:350) I really didn't want to risk the amnio but also felt like I needed to get a second opinion. After doing some research I came across information on this test which as only a blood test poses no risk to mother or baby with accuracy at around 99%. It doesn't replace amnio or CVS which would give a 100% answer but if the results come back high risk you can then make the decision for invasive tests.
In the end I decided to have it done at the Fetal Medical Centre on Harley Street which we did yesterday afternoon. They did an early anomaly scan (15+5 by this point) which he did a really thorough check for soft markers and he spent ages looking at and measuring all the vital organs and limbs and was quite confident that everything is growing and developing as it should be . I decided to still go for the blood test (H said the sonographer was suggesting I didn't need to bother) but I still needed that additional reassurance, so bloods done and I should get the results in 10-14 days. A bit of a wait but they have to send the blood to the US to be analysed.
I understand they are hoping this test will be available on the NHS within the next 4-5 years but I guess that will only happen when they can analyse the blood locally. Blood can be taken anytime after 10 weeks for singleton pregnancies so better to combine with usual 12 week/NT scan/bloods.
I don't have much experience of private maternity services but everyone at the FMC were very nice, we were allowed to take in K (5) and A (3) with us and at the end he gave them both a picture of the baby each to take home. We were a bit delayed going in so the whole thing ended up taking over an hour but otherwise a really good experience.
Happy to answer any questions - I'll try and remember to re-post when I get the results. Fingers firmly crossed in the meantime but I am starting to relax and enjoy my definitely very last pregnancy!
10/04/2013 at 17:42
Glad the scan looked good, keep everything crossed for the blood results for you. Would be fab if this could replace amnio xx
10/04/2013 at 17:51
Glad it went well. Fx for speedy results.
As an aside does it only test for downs? I'm just wondering as the nuchal results reflect risk of other trisomonies, are they included? If so then hopefully this will be more widely available in the future.
10/04/2013 at 18:41
It does also check for the other trisomonies but I think the detection rates are less accurate. Let me see if I can find the statisitics.....
10/04/2013 at 18:55
That sounds good, fingers crossed for you. We went to the Fmc for our first scan as our hospital didn't offer the nuchal test then
10/04/2013 at 18:59
Thank you! I found the stats:
99% detection rate for DS, 98% for Edwards and 80% for Patau's. Hopefully as the science improves these detection rates will do too.
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