It depends on the age of the baby. When the baby is smaller (11 weeks) then the NT should be less.
I had my scan recently and my 13 week bubs had a NT of 1.6mm which was normal. Taken with my blood results I have a 1:2241 chance that the baby has Downs.
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I had my NT scan at 12+4 and the Nuchal thickness was 1.5mm and she said that was totally normal...... I was also told that anything under 3 was considered low risk... My thickness plus my bloods gave me a combined risk of 1:23000
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Lulu have you had your 12 weeks scan yet ?
It doesn't always go on the thickness of the NF it's the mothers age and also the BT they do. The thickness for this baby was 1:4 but once they did the blood work my risk came back 1:294.
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