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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.

2006-07-26 19:12:28
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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


When will your baby show up on an ultrasound?

Around 5 weeks you can see the gestational sac.


Which sonogram is more accurate 7 or 18 week For example at 7 weeks you were 7 weeks and 3 days At 18 weeks you were 19 weeks 7 days Which is correct?

Because an ultrasound at 7 weeks and one at 18 weeks use different methods for estimating gestational age, they have different levels of accuracy. In general, a skilled sonographer's 7 week ultrasound is more accurate for dating than a skilled sonographer's 18 week ultrasound. Talk with your health care provider for information specific to your situation.


Can an ultrasound be off by a month in the first trimester How accurate is an ultrasound at 7 weeks?

Well I had an ultrasound at 13 weeks and it was not very accurate. and it will not be able to tell the sex of your baby. Oh by the way, depending on what kind of insurance you have and what hospital you are at you may not get another ultrasound. An ultrasound at 7 weeks is extremely accurate, within 2-3 days. At 13 weeks it will be accurate within about 5 days. It can certainly not be off by a month.


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?


Is pregnancy normal if you've had an ultrasound at 3 wks and see no gestational sac?

At three weeks you have likely just implanted (assuming ovulation and conception at two weeks) and there would be no sac visible. According to some websites, it can be seen as early as 4 weeks. Personally speaking, I had an early ultrasound at 4 weeks and no sac was visible. A gestational sac and yolk sac were visible at 5.5 weeks.


If you went to the doctor and they did an early ultrasound and said you were 5 weeks and 3 days pregnant could you have an early ultrasound at 3 weeks and 3 days pregnant?

There would be no gestational sac visible @ 3 weeks. YES At 5 weeks 3 days pregnant by ultrasound, you conceived 3 weeks 3 days earlier.


How accurate are ultrasounds in determining when you conceived?

At 7 weeks an ultrasound is accurate within 2 or 3 days. At 20 weeks it is accurate within 5-7 days.


When does pregnancy show up on an ultrasound?

Approximately at four weeks and three days after the last period. The gestational sac will be the first to be visible.


Does gaedd on an ultrasound indicate the time from conception to the date of the ultrasound?

No. Gestational age is measured from the woman's last period. Even if she doesn't know when this was, the gestational age is time from conception plus 2 weeks. For example, a 'gaedd 19 weeks' will give you a due date 21 weeks in the future. You are 17(+ 1 day) weeks from conception. 19(+ 1 day) weeks from your notional last period and 21 (- 1 day) weeks until your EDD.


Can ultrasoud detect a pregnancy at 4 weeks?

I think that it would be pretty unlikely to determine a pregnancy at 4 weeks via an ultrasound. At 5 weeks a gestational sac can been seen. Good luck!


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


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.


How accurate is the ultrasound due date?

In the first 8 or 10 weeks, transvaginal ultrasound is very accurate, usually to within 2 or 3 days. After this time period, it becomes less accurate, varying up to 1 week if the ultrasound is performed late in the 2nd or in the 3rd trimester.


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 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.


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.


Very irregular menstrual cycle your first day of lmp was aug 28 2005 today on October 13 2006 you are currently 41.5 weeks pregnant according to an us done at 9.2 weeks how accurate was that date?

A baby grows at a very precise rate in the first 12 weeks. A very accurate date can be given as long as you have an ultrasound under 12 weeks. If your ultrasound was at 9.2 weeks, I would consider this accurate.


Can the due date estimated from an ultrasound be off by four weeks?

It depends on when your U/S was done. I had an U/S to date my last pregnancy, because I was not having periods due to birth control. My baby was small for gestational age and so the U/S showed him due later than he actually was. BY over 3 weeks. An ultrasound done before 12 weeks is accurate to within 2 or 3 days. After that it becomes less and less accurate as your pregnancy progresses as obviously some babies grow bigger and faster than others.


Can an eptopic pregnancy show on scans at 4 weeks?

Usually there isn't a lot of anything at 4 weeks, but the ultrasound tech might be able to see a tiny gestational sac, and be able to tell you if the pregnancy is ectopic or not.


How accurate is an ultrasound if you do not remember your period?

If you do not remember the date of your last period you can have an ultrasound to determine your due date. More than one ultrasound throughout your pregnancy may be required because ultrasounds are not always accurate. They could be out as little as a couple of days by a matter of weeks.


4 weeks Pregnant my hcg levels are high but no gestational sac nor yolk sac appears in ultrasound.?

Don't stress out! With my 2nd baby I had the same thing. I was convinced that I was going to miscarry. I had another ultrasound at 6 weeks and at that time all they saw was the sac, then finnaly at 8 weeks we got to see that little peanut.


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.


Is ultrasound scanning accurate enough to reveal a baby's sex at 17 weeks?

they normally wait until 20 weeks, so I don't know how accurate it would be at 17 weeks. I would suggest getting another scan at 25 weeks if you get one at 17 weeks


You were 16 weeks pregnant your ultrasound said that the baby size was 18 weeks which one should you do by?

The ultrasound dating has excellent and precise estimation of gestation especially if done in the first trimester (first 12 weeks). After 12 weeks, its accuracy goes down. However, compared to dating according to menstrual cycle, the ultrasound would be more accurate.