Can a dating scan be wrong by 2 weeks notice

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Overdue (Pregnancy, Birth and Beyond)

A basic or level 1 scan does not need to make a specific diagnosis but should when something is wrong, resulting in a referral for a detailed or "level 2" scan. Also, first trimester ultrasound performed at 11-13 weeks can evaluate the risk of 

Frequently Asked Questions | Florida Department of Children and

Topic | Private scans! | Moms community and forums - eumom

Can dating scans be incorrect? - Pregnancy Forum UK