1 doctor weighed in:

Ultrasound dating accuracy? An ultrasound at 13 weeks and 3 days would have how many days error tops?

1 doctor weighed in
Dr. Anthony Filly
Radiology

In brief: Depends

Assuming the tech measured accurately, probably not more than 3 days.

In brief: Depends

Assuming the tech measured accurately, probably not more than 3 days.
Dr. Anthony Filly
Dr. Anthony Filly
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