Get Virtual Care
For Businesses
About Us
A member asked:
I had an ultrasound at 8 weeks 4 days nov 14th, with a due date of june 22nd. my lmp was september 19th.. which date is accurate ultrasound or lmp?
3 doctors weighed in across 2 answers
Either date is: Predicting your delivery is not an exact science. If the first day of your last normal period was 9-19 then your estimated delivery date would be 6-26 (plus or minus 10 days) and you were about 8 weeks pregnant when you had your ultrasound on 11-14. Your 8 w 4 d sonogram is quite reliable but a first trimester sonogram has a "margin of accuracy" of 3 to 5 days.Your due date is at the end of June
Answered 10/4/2015
3k views
The same: They're only 4 days apart; the ultrasound is accurate to +/- 3-4 days. In other words the dates are the "same" you cannot tell them apart. By convention, most all doctors "use" the LMP dating when it agrees within 1 week with the ultrasound.
Answered 3/25/2015
3k views
Related Questions
A member asked:
How accurate are ultrasounds? With conception date LMP 4/25/14 30 daycycle lasted 4 days DueDate 1/30/15 according to 8wk 4day ultrasound on 6/24/14
A doctor has provided 1 answer
A member asked:
I have a question about a dating ultrasound? How accurate are they ? The dating based on my LMP and the date it puts me at are 10 days apart
A doctor has provided 1 answer
A member asked:
I have two due dates based on my LMP and and ultrasound. Which one is more accurate?
A doctor has provided 1 answer
A member asked:
My due date based on a 7w1d ultrasound is Sep. 2nd but my LMP is Aug. 13th. Which due date is more accurate.
A doctor has provided 1 answer
A member asked:
If there is a four day difference between my LMP and ultrasound date, don't i go by ultrasound and could that mean i ovulate late?
A doctor has provided 1 answer
People also searched for:
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?
How well is conception date accuracy with ultrasound at 12 weeks? My LMP started on nov.28, 2011 lasting five days. I had an ultrasound on jan.17, 2012 counting me at 7 weeks and 1 day, then another ultrasound on feb.21, 2012...Counting me at 12 weeks exa
When I had my ultrasound on April 15th baby measured at 9 weeks 3 days my lmp began feb 10th , according to the ultrasound it wouldve put me on Feb 8, which one is more accurate the ultrasound date or my lmp date ?
How accurate are ultrasounds @ 6 weeks? My due date is august 29th according to ultrasound yesterday my LMP was nov 18 when did i conceive? Please? :)
Ultrasound accuracy at 13 weeks an 3 days i was just wanting to know the number of days an ultrasound could be off at that point would it be off by 14 days? And also my LMP was 10/27/2011 due 08/02/2012 but the ultrasound said LMP 10/18/2011 due date 07/2
Didn't find what you're looking for?
90,000 U.S. doctors in 147 specialties are here to answer your questions or offer you advice, prescriptions, and more.
Ask your questionMore of what we treat
Download HealthTap
Video visit and message your doctor
