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A member asked:

How is conception date calculated by first trimester ultrasound?

A doctor has provided 1 answer

Measurements: US uses measurements of the gestational sac and then the growing fetus to date a pregnancy. The appearance of the heart beat. Usually measurements are compared to standards for various parts of the pregnancy and a date assigned.

Answered 3/21/2015

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Related Questions

A member asked:

I wanted to know how accurate early ultrasounds (first trimester) are in conception dating? If i was 5 weeks4days 9/23/13 putting conception 25-28 of aug could I have still concieved 7/28/13

4 doctors weighed in across 2 answers

A member asked:

Are first trimester ultrasounds better at estimating conception or lmp?

A doctor has provided 1 answer

A member asked:

If my 1st&2nd trimester ultrasounds are giving me a conception date of aug 24-28 is it safe to say i concieved around this time or could I have still concieved from a july 27 encounter being off 4week?

2 doctors weighed in across 2 answers

A member asked:

My doctor switched my ultrasound from a pre-conception ultrasound to a first trimester ultrasound. What's the difference?

A doctor has provided 1 answer

A member asked:

How accurate are second and third trimester sonogram measurements in figuring date of conception?

A doctor has provided 1 answer

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People also searched for:

Can you figure out conception date from 2 first trimester ultrasounds??
LMP was Feb 18, I have shorter cycles of 25/26 days. 3 first trimester ultrasounds gave me a due date of Nov 19-21 putting conception at Feb 27-29. How accurate are these conception dates? Anyway conception occurred before February 20?
Four first trimester ultrasounds done at 7 8 10 12 week all come. Up with same conception date. What's it mean??
How often are first trimester ultrasounds off in dating conception?
Are conception calculators online accurate based off first trimester ultrasound?

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