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The earlier it is the more accurate it is whether from conception or from LMP, but if you say 12 weeks you mean from LMP.

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19y ago

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Can your last menstrual period show twenty three weeks but your ultrasound show twenty seven weeks which is more accurate?

ultrasound is more accurate. Measurments of the fetus are made during ultasound that give a more accurate gestational age


Is an ultrasound more accurate in dating of pregnancy especially if you do not know your LMP?

Yes, During an ultra sound they measure the length of the baby, the limbs if visible, head circumference etc.. then calculate an expected delivery date. An ultrasound is accurate to within a couple of days if done at 8 weeks. At 20 weeks it is accurate to within a week. After this babies grow at such diffeerent rates that it becomes increasingly less accurate.


Can a ultrasound be accurate if its saying im now due 3 weeks later then they determined?

Can a ultrasound be accurate if its saying im now due 3 weeks later then they determined?


From what day the ultrasound give the age?

Ultrasound measurements can estimate gestational age from as early as six weeks of pregnancy. The most accurate dating typically occurs during the first trimester, especially between six and eleven weeks, when measurements of the embryo or fetus can provide precise age estimates. After the first trimester, the accuracy of gestational age estimates can decrease, although ultrasounds throughout the pregnancy can still provide helpful information on growth and development.


Does a ultrasound tell the exact weeks your baby is?

An ultrasound can provide an estimate of the gestational age of the fetus, which helps determine how many weeks pregnant a person is. The accuracy of this estimate is highest in the first trimester, where measurements of the embryo or fetus can closely correspond to gestational age. However, as pregnancy progresses, factors such as individual growth rates can lead to variations, making it less precise in later trimesters. Therefore, while ultrasounds are a valuable tool for estimating gestational age, they may not give an exact number of weeks.


Can a ultrasound show if you are two weeks pregnant?

It is not likely, the most you would see is the gestational sack. The heartbeat cannot even be detected until week 5.


What's the difference between galmp and gaedd when an ultrasound is performed?

GA is gestational age which is how far pregnant you are. LMP is last menstrual period, which is the date of the first day. EDD is estimated dte of delivery (40 weeks from the LMP) The EDD may be changed if the ultrasound gestational age differs from the age by LMP by a lot.


How long before a doctor can see a baby in an ultrasound?

ABout 5 to 6 Weeks, not much there to see really. They are tiny tiny then. God bless


What is visible on an ultrasound at 6 weeks?

At 6 wks pregnant, on ultrasound, you can see the gestational sac ( the home of the baby). Unless you have an endovag ultrasound, then you can see a very small fetal pole and a small heart beat. It is very hard to see anything at that early of pregnancy.


At how many weeks in your pregnancy can you tell if the baby is a boy or girl?

At 16 weeks it is 80-90% accurate using an ultrasound


When did you conceive Not sure of first day of LMP but last day was 21407 ultrasound done today 32107 says 5 weeks gestational age?

Because of the way that gestational ages are calculated, a pregnancy called "5 weeks gestational age" was conceived during sex that happened about three weeks ago, so you probably conceived around the first of March. That date makes sense with your best guess of your LMP date as well.


You had an ultrasound 18 weeks tech said 90 girl was flat in between legs accurate?

The ultrasound at 18 weeks is about 90 to 95 percent accurate. It there is a flat place between the legs it means it is a girl if there is something hanging it means it is a boy.