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A member asked:

If a baby's crl is 1.64 cm how many weeks and days does that measure?

A doctor has provided 1 answer

8 weeks 1 day: A crown rump length dating table says that would correspond to a gestational age of 7 1/2 weeks to 8 1/2 weeks.

Answered 4/18/2015

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I just had my first ultrasound my CRL is measuring 7 weeks 6 days but the GS is measuring 5 weeks 6 days. The babies heart beat was 138bpm. Everything Ive read is that if the GS is more then 5 mm smaller pregnancy may not be viable mine is 9mm out?
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