I had my NT scan a few weeks ago, and the radiographer took the measurements but said its more accurate with the blood test results as well, as a lot of people have a high nuchal fold measurement and completely normal blood results (or vice versa).

Measurements can be thrown off by the dates as well, if the bub is actually older than you think, which can happen if you're not 100% sure when you ovulated/conceived.

Oh, and up to 3.5mm is considered normal, and anything beyond is considered possibly high risk, depending on blood tests. I assume you're having or have had the blood tests? I hope everything comes back clear for you :hugs: We are here for you to chat and vent whenever you need... many many woman have had disappointing nuchal fold measurements and can help you through some of the emotions you are going through.