Question: When is the first us done in pregnancy?
Disambiguated questions and answers: question: When is the first ultrasound done in pregnancy, for patients that want genetic testing?
When is the first ultrasound done in pregnancy, to confirm pregnancy dating and assess for congenital malformations?
answer: 11 weeks - 13 weeks 6 days gestation
18 weeks -22 weeks
Natural Questions answer: 5 weeks ' gestational age (from the Wikipedia article "Obstetric ultrasonography")