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Doctor insights on: Fetal Weight Large For Dates

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Fetal Weight Large For Dates (Overview)

A weight "large for dates" usually means the baby is above the normal size that a baby should be at that gestational age. The gestational age is how far along the pregnancy is.


Fetal Weight Large For Dates (Overview)

A weight "large for dates" usually means the baby is above the normal size that a baby should be at that gestational age. The gestational age is how far along the pregnancy is.


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Is an efw via ultrasound of 3lb 9-10oz large for a 30w3d fetus? How accurate is this weight? Edd was confirmed by multiple early ultrasounds.

On track: That weight is on track for that age. For the 3rd trimester, your baby is fully formed and now just gaining weight and developing lung strength, etc. Baby will gain about 1/4 to 1/2 pound a week from here on. ...Read more

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Yesterday they did a us it show 5wk gestation sac no fetal pole my big is 4446.2 when did i concieve what's my due date i need serious help please?

Yesterday they did a us it show 5wk gestation sac no fetal pole my big is 4446.2 when did i concieve what's my due date i need serious help please?

Follow up with OB: Another us is indicated to see if this is a viable pregnancy in 7-10 days. Based on the ultrasound date the edd would be 09/13/2013. Based on a 28 day cycle conception would have occurred approximately 01/07/2013. ...Read more

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In 12 wk u/s margin of error is 1 wk. Is this error on the due date or error on fetus measurements? Don't fetuses grow at same rate in 1st trim?

Both: When measuring such small dimensions with shadows, the test is going to use a range. When they say 1 week, it is plus or minus a week. As the pregnancy moves further along, the accuracy will improve as they have more baby to measure & features to study. ...Read more

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If u went for a 12 wk u/s and it showed the measurements of a 9 wk old fetus, is this enough of a difference to change the due date?

If u went for a 12 wk u/s and it showed the measurements of a 9 wk old fetus, is this enough of a difference to change the due date?

Yes! Yes! Yes!: You were not 12 wks when you thought you were! you were 9 weeks (as long as the 9 week fetus showed fetal heart activity). The only way you could have a 9 week size fetus and really be 12 weeks would be if the fetus had died at 9 weeks and been retained in your uterus. End of story. ...Read more

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If u went for a 12 wk u/s and it showed the measurements of a 9 week old fetus, your due date would be much different , by several weeks?

If u went for a 12 wk u/s and it showed the measurements of a 9 week old fetus, your due date would be much different , by several weeks?

If u are 9 weeks and: There is a normal htbeat, then u would be due 3 weeks later, u need to discuss this with your obgyn. ...Read more

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I had my first u/s 7 weeks 4 days with a 144 hb. I'm concerned because the amniotic sac looked 4-5 times larger than the fetus. Is this normal?

I had my first u/s 7 weeks 4 days with a 144 hb. I'm concerned because the amniotic sac looked 4-5 times larger than the fetus. Is this normal?

Yes: The gestational sac should be significantly larger than the fetus at this point. If the fetal size is ok, the heart beat is normal, don't stress! ...Read more

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I had my 1st u/s done on 6/25/12 & i was 9 weeks & 6 days given a due date of 1/22/13, not sure of my lmp. After 6wks the fetus double in size?

I had my 1st u/s done on 6/25/12 & i was 9 weeks & 6 days given a due date of 1/22/13, not sure of my lmp. After 6wks the fetus double in size?

May 1st conception: Usually when people ask this question, they're interested in when conception happened. Based on the ultrasound due date, the conception was somewhere between april 24th and may 8th. The lmp may vary from woman to woman but with a normal 28 day cycle, it would have been april 17th. ...Read more

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U/s on 1/20/14 gave measurement of 11w4d measuring the fetus at 4.8 cm. Could 11/25/13 be conception date? What is the accurate conception date?

U/s on 1/20/14 gave measurement of 11w4d measuring the fetus at 4.8 cm. Could 11/25/13 be conception date? What is the accurate conception date?

11/14/13: Based on the information you provided, the 'average' date of conception would be appx 11/14/13. While 11/25 could be the conception date, it's highly unlikely. Most first trimester ultrasounds are the most accurate ultrasound we have for dating a pregnancy. Typically standard deviation of error is +/- 5 days. Which would be as early as 11/9 or as late as 11/19. Thus, 11/25 is an outlier. ...Read more