Canada

A 32-year-old female asked:

If 1st trimester u/s are off by a week, than would this mean fetus gest age would be off? would fetus be 11 or 13 weeks then when it measured 62mm?

1 doctor answer • 1 doctor weighed in

Dr. Liza Kunzanswered

Maternal-Fetal Medicine 23 years experience

62 mm CRL: A 62 mm crown rump length corresponds to about 12 weeks 4 days. Hope that helps!

Created for people with ongoing healthcare needs but benefits everyone.

Learn how we can help

5.2k viewsAnswered >2 years ago

Related questions

A 24-year-old female asked:

Do all fetuses grow the same in the first trimester? Poss for a fetus to grow small & date multiple weeks behind? Ex actually be 12w, but date 8w?

1 doctor answer • 3 doctors weighed in

A 32-year-old member asked:

What are the effects of heroin on a fetus in the first trimester?

2 doctor answers • 4 doctors weighed in

A 24-year-old female asked:

When are growth restrictions/larger than normal fetuses diagnosed? Ever in the first trimester?

1 doctor answer • 3 doctors weighed in

A 24-year-old female asked:

Is it possible for a fetus to be slower growing in the first trimester & just be small for ga, causing measurements to be off?

1 doctor answer • 2 doctors weighed in

A 35-year-old female asked:

What could be causing constant spasms under my lowest right rib, in the front of my body? It feels similar to fetus kicks during my first trimester.

1 doctor answer • 2 doctors weighed in

Last updated Mar 14, 2013

Found in:

People also asked

If fetus in 1st trimester is measuring "small", does it mean that you aren't as far along as u thought, or there's an issue?

1 doctor answer • 1 doctor weighed in

Can ultrasounds be off when it comes to determining fetus age in the end of 1st trimester?

1 doctor answer • 3 doctors weighed in

I have taken only one dose of dayquil which contains Phenylephrine almost 30ml during my first trimester. I was 3 weeks and 3 days (fetal age) not gestational. My gestational age at that point would be 5 weeks and 3 days. Have I done harm to my baby?

1 doctor answer • 1 doctor weighed in

What does 'heart - ht/st left' mean on a first trimester scan report? Was found in the fetal anatomy section.

1 doctor answer • 1 doctor weighed in

Taking into consideration an us is -/+ 2 weeks in 2nd trimester, what is the cause of this? Does it mean the fetus is growing at a faster rate?

1 doctor answer • 1 doctor weighed in

Connect with a U.S. board-certified doctor by text or video anytime, anywhere.

Talk to a doctor now

24/7 visits - just $39!

50% off with $15/month membership

Disclaimer:

Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.