Ultrasound accuracy dating speed dating reno nevada

The last ultrasound I had was a long one, they measured everything.My due date based off of lmp was 1-11-2011, then the 12 weeks u/s gave me due date of 1-1-2011, 22 wks u/s(gender) gave new due date of , had last u/s @ 32 wks (measuring big) and gave me the due date of , my dr said that we will keep the due date of 12-28, but it seems like everytime they check it changes about a week, but I also don't know the exact date I had my lmp Hi I was also in a similar situation, because I initially was going by my last lmp, but we all know that not everyone's cycle is always on the dot, and we may ovulate differently.If you have an irregular cycle, or if you've recently been taking the contraceptive pill, working out the date from your LMP isn't a very accurate method.Ultrasounds are more accurate than using the LMP and, if the ultrasound date differs from your period dates, the ultrasound date will be used.I had read somewhere, can't remember exactly where that the tests done in the first trimester are the most accurate regarding due date.The lab does give ± 5 days leeway, but I was also told by my doctor to go by the lab's due date, because it would make a difference if I went past my due date and she needed to induce me.

The length of your pregnancy is calculated from the first day of your last menstrual period (LMP), even though you don't actually conceive until 14 days after your LMP, and later than this if your cycle is longer than 28 days.The ultrasound date is usually later than the period date, so accurate dating has been found to reduce the number of women having labour induced because their babies are overdue The ultrasound can check that your baby has a heartbeat and is developing normally.Your baby's head, limbs, hands and feet, and some organs can be seen, and - though looking for abnormalities isn't the purpose of the ultrasound - some major problems can be seen at this early stage.So the computer determined that my due date was 4/18/11.When I went for my 10-12 week scan where they test for down syndrome and trisonomy, they determined my due date as 4/13/11.From collected data, it was found that out of 53 (100%) patients, 44 (84.62%) pregnant woman have different gestational age from US and last menstrual period (LMP).


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