Doctor insights on:
What Is The Margin Of Error At Dating Scan
Are ultrasounds done at 13 weeks pregnant accurate? What is the margin error of dating scans performed at this stage of the pregnancy?
Yes, fairly accurate: The margin of error on a dating scan at 13 weeks is approximately 7 days. ...Read more
Whats the error of margin for u/s dating at 11w4days on 01/20/14 with edd of 8/08/14 as far as conception date? Is 11/25/13 eliminated from conception
You should be: Discussing all of this with your OB since your OB should answer any dating questions you have any any ?S about conception date with that us conception would be 11/15 as your OB could have figured out, us should be acurrate + or - 3-4 days but ask your OB what their range is. ...Read moreSee 2 more doctor answers
What is the error of margin for an ultrasound dating at 11 week 4 day, measuring the fetus crl at 4.8 cm?
Plus or minus, 5 day: The margin of error at that gestational age is typically + or minus 5 days. That crl is definitely normal for that gestational age. ...Read more
Ultrasound dating accuracy? An ultrasound at 13 weeks and 3 days would have how many days error tops?
Depends: Assuming the tech measured accurately, probably not more than 3 days. ...Read more
My dating scan 2 weeks ago showed gest sac =5w1d. No fhr.Today scan showed crl 4.4mm =6w1d, sac 13.4mm, fhr 112. Is this reassuring ?Need f/ u scan?
Everything: Sounds encouraging and the embryo is growing. Consult with your obstetrician about the need and timing of future ultrasounds. ...Read more
my dating scan 1st August 2014 dated me 12w 5days who is the dad? the one on the 20th april or the second on the 29th april til middle of may?
Second one: Thirteen weeks is a trimester, or 91 days, which puts your date if conception around the 3rd of May. Since there is an error factor of +/- 5d - 2weeks, you will probably need to do paternity testing, since within this error factor, either one could be the dad, within the error if the testing technique. Dad #2 is the front runner in this calculation, but can't rule out #1 by dates alone ...Read more
I had a dating scan yesterday I am 4w3d. I didn't feel nauseous that much and my nips still are sensitive but not as much can symptoms come and go?
Yes: Absolutely! It's early, so symptoms will wax and wane for a couple of weeks then set in. Every woman's experience is different ...Read more
How accurate is a dating scan saying im 9 weeks. Had 2 a week and a half apart and both said same things. 1st-due date jan 27th other, jan 26th 2016.
Ultrasound: dating is generally accurate by +/- 8% in days, so at 9 weeks it is accurate to approximately +/- 5 days. ...Read more
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