A member asked:

What puts a fetus at 12 weeks and 4 days compared to being just 12 weeks?

A doctor has provided 1 answer
Dr. Nikolaos Zacharias answered

Specializes in Maternal-Fetal Medicine

Slightly >CRL.: This cannot be reliably differentiated with crown-rump length assessment at 12 weeks because that is +/- 7 days off.

Answered 10/24/2017

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