This morning I completed the first part of the sequential screening test to help assess the risk of Down’s syndrome and other chromosomal abnormalities. The first part of the test must be administered within the 11th and 14th week and doesn’t actually give a diagnosis but all goes towards calculating a probability of a problem. I had been back and forth on whether it was worth it to put more doubt in my mind or if it could potential clear any doubt but, in the end, I decided that its availability, coverage by insurance, and the non-invasive nature of the test was worth putting the muzzle on the early announcements and really find out if there was anything to worry about.
It was a great choice! The ultrasound portion involved measuring fluid at the back of the neck, checking for the existence of a nasal bone and confirming that the fetus was growing appropriately for its age as well as the location of the placenta. A high amount of fluid and/or the lack of a nasal bone would indicate a higher risk of Down’s syndrome. Our little one looks like it’s on a good track and the results of the blood test (next week) will hopefully support that as well, giving us an 80% probability that everything is genetically fine. The second part of the test involves another blood test at the end of this month coupled with another ultrasound at the end of next month and that should give us a 90% probability of good results. I am so darned relieved after this morning that I’m no longer worried about what test is next. What a difference a day makes!
On a really fun note, the little one was in what the ultrasound technician called an “active state”, which I interpreted as really hard to localize and get proper measurements and readings. I got to comfortably watch it for almost 10 minutes straight! It was all over the place: changing positions, bouncing off the sac it seems to be quickly outgrowing. The heartrate was measured at about 150 bpm and I’m assuming from the numbers on the corner of the pictures that we are currently at 10cm. Yowza!