Amelia, Hmmm I personally would want to know what the implications are if you don't test. End of the day that's a lot of money so there needs to be a good reason for testing so near to coming off the steroids anyway.
So the NHS do the nuchal scan at 12 weeks and that is a combination of an ultrasound scan to identify soft markers known as nuchal translucency and also nasal bone, heart function and liver etc. And also two blood tests which are for your hcg levels and also the Papp-a score which is placental function. Based on these combined results they assess your probability of your baby having trisomy 13, 18 and/or 21.
This is also based on your age. I'm 37 and before all of the above tests my probability was 1 in 148 for trisomy 21 (Down syndrome) and after my tests because my Papp-a was low my score became High risk at 1 in 63.
At kings they offer you three choices, cvs, do nothing or harmony test which if done privately costs 500 pounds. Most hospitals don't offer harmony free of charge.
We chose harmony as if the child had downs we would keep him/her anyway plus I'm not risking cvs with my mc history.
Thankfully I got my results last night and it's 1 in 10,000, I'll take those odds! The harmony test looks at the baby's blood in your blood and checks for all three trosmies and its 99 percent accurate.
Lots of older expecting mums decide to have this test privately from 10 weeks as it's likely their risk odds would come out High owing to their ages alone!
Hope that helps
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