3 doctors weighed in:

Are first trimester ultrasounds better at estimating conception or lmp?

3 doctors weighed in
Dr. Robert Kwok
Pediatrics
2 doctors agree

In brief: Better than later

A pregnancy dating ultrasound done at 8 to 11 weeks of pregnancy is pretty accurate when done by an experienced technician.
The estimate can be a few days or a week off in either direction.

In brief: Better than later

A pregnancy dating ultrasound done at 8 to 11 weeks of pregnancy is pretty accurate when done by an experienced technician.
The estimate can be a few days or a week off in either direction.
Dr. Robert Kwok
Dr. Robert Kwok
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