The nuchal translucency measurement can be taken during the dating scan. Back to Your pregnancy and baby guide. You may need to have a full bladder for this scan, as this makes the ultrasound image clearer. Screening for Down's syndrome will happen at the dating scan if:. We have identified three BPD formulae that are suitable for dating at weeks of gestation. It will usually take place at your local hospital ultrasound department.
Gestational age according to oocyte retrieval was regarded as the true gestational age.
Dating scan or NT Scan (routine) at 10-14 weeks
The mean of the differences between estimated and true gestational age and their standard deviation SD were calculated for each formula. Author information: Check here for alerts. Sladkevicius med. This test is not quite as accurate as the combined test. Main navigation Getting pregnant Secrets to success Healthy diet Planning: