On the NHS NT scan leaflet that I was given it says they only advise further investigation if the NT measurement is 3.5mm or above or you combined test results come back as 1:150 or higher. I was worried when my lil ones NT measured 2.4mm, but the sonographer didnt seem concerned and my combined results came back low risk, which really put my mind at ease. 2.8mm is still less than 3.5mm so Im sure you baby is fine and will be deemed low risk x
I think you are ok, I don't think they would be overly concerned at that level.
How far on were you when you had the test? I think that makes a slight difference.
I found this link really helped me understand the tests.
if the NT is 3.0 or above then they would do more tests, but 2.8 is perfectly healthy but they also take into consideration the blood results they get from the blood they kindly stole from you after the scan. with both of these results they make the overall risk of downs sydrome. id say that your baby is low risk, but just remember the bloods are also part of the test. x
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