Get Virtual Care
For Businesses
About Us
A member asked:
Is the age shown on an ultrasound measured from lmp or conception? the us said 5w1d. if this is from lmp, conception would be after i got a pos. test
A doctor has provided 1 answer
From LMP but..: ...If the sonographic dating was obtained from measuring the "mean gestational sac size", its margin error may be wide and it may be inaccurate. If it was determined from the average of 3 measurements of a "crown rump length" by a certified experienced sonographer, it is more reliable and precise. A repeat scan in a few weeks may be valuable.
Answered 11/4/2015
2k views
Thank
Related Questions
A member asked:
My LMP was 6/11/12. Ultrasound on 8/7/12 said ga was 7w5d, crl 1.44cm. What are possible dates of conception?
A doctor has provided 1 answer
A member asked:
My ultrasounds date back to my (estimated) date of conception rather than the first day of my LMP. Is this normal?
A doctor has provided 1 answer
A member asked:
Is conception more accurate based off LMP or 9 week ultrasound?
A doctor has provided 1 answer
A member asked:
Why does my ultrasound and lmp match to the exact date? Do ultrasound measure from conception?
A doctor has provided 1 answer
A member asked:
Due date is july 5th, have regular 30 day cycles. All ultrasounds are measuring perfectly with lmp. When was conception?
A doctor has provided 1 answer
People also searched for:
How accurate is an early ultrasound? On 6/15/18 baby measured 5w6d. Between what dates could conception of happened? LMP 5/5.
Don't need to pinpoint conception day, but two first trim ultrasound give same due date we have no lmp to go off, how accurate is age of our baby?
Conception Question-LMP Dec7,2020. HCG test Jan11,2021 showed hcg level @ 529 (5weeks). Ultrasounds show baby 6-7 days behind DD (calc by LMP). Could I have conceived just 13 days prior to Jan11?
Had sex20/11/21but had very heavy painful flow starting on the6/12/21-10/12/21 and then had regular partner from then on us on 10/03/22-13w1d 2 day difference between lmp and ultrasound not sure on cycle length could I of had chemical-conception???
I'm due aug 30th according to ultrasound at 12 weeks, 1st ultrasound at 6 weeks said due date aug 29th, my LMP nov 18 need my conception date range :)?
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
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.
HIPAASecure
SOC 2 Type 2Certified
JCAHOAccredited
Download HealthTap
Video visit and message your doctor
