How Accurate Are Ultrasound Due Dates At 7 Weeks?

How Accurate Are Ultrasound Due Dates At 7 Weeks? How accurate is the ultrasound examination? Ultrasounds performed during the first 12 weeks of pregnancy are generally within 5 days of accuracy. The most accurate time is between 8 and 11 weeks gestation. How accurate is a 7 week ultrasound for due date? Gestational age assessment