How accurate are weight predictions via ultrasound?

[didispunk]

My sonographer the other day said can be out 400g either way.

[Traveller]

My sonographer the other day said can be out 400g either way.

I think your sonographer was underexagerating a bit, I have knows scans to be more than 2lbs out (that's almost a kg)

[teresa]

My sonographer the other day said can be out 400g either way.

my scan the day before DS was born was definately a kg out!!

[Tegam]

my scan the day before DS was born was definately a kg out!!

The day before! wow, did you feel like going back and saying something?

[teresa]

no i was just glad that he was safe and i didnt have to worry anymore! it just shows that they are very rarely accurate tho.

[Faithful Mumma]

Well, I had a scan the day before DS was born predicting his weight to be just on 9lb.......he was 11lb 2oz!!!!