Hello ladies, I wonder if any of you have been in a similar situation and might be able to shed some light on my confusion? 
I had my dating scan last Monday, including the Nuchal Translucency screening - this was fine, within the normal range; 2.1mm at 12 weeks and 3 days. I also had the blood samples taken and, frankly, thought no more about it. I then had a phone call on Friday afternoon informing me that I was considered high risk, with a chance of 1 in 130 of the baby having Downs Syndrome.
I was upset, and pretty shocked to be honest (after severe pre-eclampsia with my first resulting in a 6 weeks' premature baby - absolutely fine, but terribly stressful at the time, and then a recent early miscarriage, frankly this was the one thing I hadn't dedicated a significant chunk of time to worrying about) - and have been worrying ever since. 
Anyway - eventually, to my point! I phoned the screening coordinator yesterday to ask her a little more about my test results and she told me that my NT result was fine, as I knew, and that it was that my hCG level was slightly raised, though still within normal levels. (She said this could just be normal for me and may have no meaning at all.) The result for the other protein measured was fine too, apparently. I am 32, nearly 33 - so not yet at a particularly risky age? - and my confusion is about why I would be considered high risk when none of my results are out of normal range? Is it just a combination of slightly dodge results? I would phone back and ask, but she is now on holiday for a few days and I fear I may drive myself MAD!
Sorry this is so terribly long-winded - if you've made it to the end and have any words of advice I would be very grateful.
x