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A member asked:

Had a dating ultrasound i was 14w3d. couldnt use lmp i was on depo,i wasnt having periods. can edd be off by 2w3d at 14 week ultrasound.how accurate?

A doctor has provided 1 answer

Unlikely: 14 week ultrasound is on the cusp between first and 2nd trimester. First trimester ultrasound usually accurate to 3-5 days. Second trimester accurate to 1-2 weeks. So at 14 weeks I would doubt the dates would be 2w3d off. This would be more likely in the third trimester.

Dr Ali agreed

Answered 5/5/2015

3.8k views

Thank

Related Questions

A member asked:

If you ovulate later than the normal 14 days after lmp, would the dating ultrasound this and would it affect your due date?

A doctor has provided 1 answer

A member asked:

I had my period on April 9th. My periods are fairly irregular by a week or so. My ultrasounds measure two weeks behind my LMP due date. I've had one done at 5WKS (too small to tell), 6WKS5DYS, & 19WKS. They all gave me the same due date by except 2 days.

A doctor has provided 1 answer

A member asked:

I had sex with 2 partners. The first one before my LMP was May 28,2022. I then got my period June 8,2022. The 2nd partner and I had intercourse after my LMP. My due date is 3/16/23 both of my ultrasounds match up to my LMP? Whos more than likely dad?

4 doctors weighed in across 2 answers

A member asked:

I had dating ultrasound at 20 weeks (less accurate) giving me a due date of 9/6/13. Is it possible for father to be someone i had sex with 11/23/12?

A doctor has provided 1 answer

A member asked:

Is a dating ultrasound accurate showing 8 weeks if the fetus has iugr and woman has no known LMP? Can the fetus actually be 20 weeks along and just look like 8 weeks due to iugr

A doctor has provided 1 answer

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People also searched for:

Is u/s dating in first trimester more accurate that going by LMP? EDD changed & going by ultrasound now...
With a my first ultrasound being done my doc said i was 14w3d based off ultrasound i didnt have periods just got off depo. How off can dating be?
If i havent had periods for two years due to Depo-Provera how can they date me off LMP i had first ultrasound at 14w how old will bby measure then?
Regular periods and the LMP 6th may. Dating scan 1st august said 12 weeks and 5 days edd 8th february. Baby was born 4th february when did i conceive?
What do dating ultrasounds date? Conception, lmp, or due date?

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