Dating ultrasound 11 weeks
During the examination, the fetus is seen by abdominal ultrasound.
Occasionally the view is not clear and it may be necessary to perform a vaginal scan.
The test cannot be performed outside this time frame as certain features that need to be seen on the scan are not present.
This test results in a 9095% detection rate of pregnancies that may be at an increased risk of carrying a genetical problem such as Downs Syndrome.
The test is performed between 11 weeks and 13 weeks 6 days into your pregnancy.Crown Rump Length: Gestational age = 6 weeks plus (CRL x days).