2 doctors weighed in:

Are ultrasounds done at 13 weeks pregnant accurate? What is the margin error of dating scans performed at this stage of the pregnancy?

2 doctors weighed in
Dr. Liza Kunz
Obstetrics & Gynecology - Maternal Fetal Medicine
1 doctor agrees

In brief: Yes, fairly accurate

The margin of error on a dating scan at 13 weeks is approximately 7 days.

In brief: Yes, fairly accurate

The margin of error on a dating scan at 13 weeks is approximately 7 days.
Dr. Liza Kunz
Dr. Liza Kunz
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