How accurate are ultrasounds. I had one on April 19th, 2011 that said I was 7 weeks with a due date of Dec. 2nd. Which made my last lmp Feb. 25th, 2011. I don't remember when my last cycle was. So wondering if I can depend on this as an accurate date. I also had an anatmony scan done. I can't remember the exact week but it very close to the same. It gave me a due date of Dec. 1st. How accurate are these scans?

Ultrasounds can indicate the size of the fetus. There is no other way to do this, eligirl, so is as accurate as medical science can get.

Tick