Hi Buzzy, it's 1am and I can;t sleep so naturally I got onto MN!
I'll try to remember what they checked for at the scan. Cysts on the brain, nasal bone present, various facial features, heart and stomach being separate, nuchal fold, kidneys (can be dilated if baby has DS),size of tube from kidneys to bladder, length of arm and leg bones (can be short if baby has DS) and overall size of the baby (can be small if has DS). She spent quite a long time looking at the heart as a heart defect is major sign. I think having a few of the weaker markers doesnt neccessarily mean DS, someone posted on MN that they had 4 soft markers but baby didn't have DS. But obviously the more markers the higher the risk.
She may have checked for other stuff too, but that's what I remember. I had the scan at National Womens at the main Auckland Hospital and the sonographer and doctor were both really helpful and reassuring, obviously they get a lot of high risk/follow up scans referred to them so they are good at dealing with them. CAn you be referred to main hospital in Wellington for your 20 week scan? May be better at looking for stuff there than at one of the general radiology places.
I have a friend in Petone with 2 dds, trying to remember if she ever had the serum test. Though if you're having amnio it doesn't really matter.
Right , must try to get more sleep.