U/S weight vs. birth weight

TXgrlnFL · April 2010

Hi Ladies,

My last few girlfriends that have given birth had a 38 week u/s. It seems that the weight given at the u/s was high by a 1/2 lb - 1 lb compared to the LO's weight at birth.

I know every pregnancy is different, but will you share your experiences please? The u/s tech told me my LO was measuring 8.5 lbs and I still have (possibly) a week and a half. My girlie parts are freaked out!! Smile

Thanks in advance...

sassafras007 · April 2010

34 wk u/s said 3 lbs 14 oz and she was 3 lbs 13 oz when she was born a few days later...

grapeape73 · April 2010

u/s at 38.2 weeks said 8 pounds give or take 10%

She was born at 38.5 weeks weighing 7 pounds 13 pounds.

dunvilles · April 2010

38 weeks the ultrasound said 6lbs... 2 days later I gave birth to an 8lb 4oz baby!!

BTW, the size of the baby won't be the hard part of labor, its the contractions :P IMO birth is the EASY part... The hard part is the sleep deprivation for the next 12 weeksish hehe

lovinfall · April 2010

I had an u/s in triage where the resident indicated a 8lbs. 8 oz. was on the way. He was born 6 hours later and weighed 7lbs. 4 oz.

MamatoJackson · April 2010

At 40 weeks, I was told 8 lbs. At 40 weeks, 6 days, he was 7 lbs, 14 ounces.

sbevmc09 · April 2010

36 week U/S said around 6 lbs. 5 weeks later he came out at 8 lbs. 2oz. It was pretty accurate since they say baby gains about a 1/2 lb. per week at the end there.

FemmeNat01 · April 2010

Our 33 week u/s said 2lbs 8oz for Elena and 3lbs 13oz for Lucas. Elena weighed 3lbs 1oz and Lucas weighed 4lbs 4oz when they were born 6 days later.

emilynichole1 · April 2010

The day before delivery level 2 us said 4lbs 15oz, she actually weighed 4bls 3oz

TXgrlnFL · April 2010

Thank you all for the info. I guess, like everything else, I'll just have to wait in see. This whole pregnancy thing is killing the control freak in me!!!! Hopefully, I'll be over here soon....

Ciconrad · April 2010

38 week u/s estimated a weight of 7 lbs 2 oz

Born a week later at 7 lbs 12 oz - so it was right on if you assume the 1/2 pound of weight gain per week at the end of pregnancy.

skmac05 · April 2010

U/S at 35w2d said around 5lb. He was born at 35w4d weighing 3lb 13oz.

skmac05 · April 2010

sassafras007:
34 wk u/s said 3 lbs 14 oz and she was 3 lbs 13 oz when she was born a few days later...

Landon weighed that!! I put one of his preemie outfits on top of him today and they only reached to his knees! He used to swim in preemies!!!

mandeline21 · April 2010

Ultrasound the day of my c-section estimated 9lbs 3oz, and DD was 8 lbs 13 oz.

JennLuvsMatt · April 2010

at 39 wks 2 days the estimate was 9lbs or over

birth weight 3 days later 8 lbs 3 oz.

BabyLove987 · April 2010

My OB thought LO was 1/2 lb more than she really was.

kiki_1218 · April 2010

I had a grown u/s done at 40w3d and was told 8lbs 2oz. I had her at 40w 1d and she was 8lbs 2oz. I was shocked they were right on!

emmielou83 · April 2010

I had an ultrasound at 40 weeks, and LO was estimated to be 9 lb, 9 oz. They tech told me that might be a little high. Exactly one week later, I had my 10 lb, 6 oz baby, lol!

SugarhillHnA · April 2010

I had an u/s the morning I went into labor and the tech estimated our DD was 9 lbs 2 oz. At birth 15 hours later she weighed 8 lbs 6 oz. It really is only an estimate, so I wouldn't be too worried. Nine times out of ten your body won't make a baby too big for your pelvis to handle.

MrsWindyCity · April 2010

At my 40w appointment, they estimated DS to be 8 lbs, 5 oz. I delivered 3 days later and he was 8 lbs, 1 oz.

misscharlotte04 · April 2010

My last U/S between 36 and 37 weeks said LO was 8.6 lbs. He was born at 39 weeks exactly weighing 9.13 lbs.

Kanne0729 · April 2010

At 38 weeks right before they induced me they did an ultrasound and they said he weighed 7 lbs, he was born weighing 6lbs 10 oz.

kmpls · April 2010

My u/s 2 days earlier had him at 6 pounds 7 oz, he was born at 6 pounds 2 oz - just 5 ounces off.

sapgirl76 · April 2010

At 37 weeks I was told 7-7.5 lbs. DS was born at 38w2d weighing 9lbs 6.5 oz.

Lux_Diva · April 2010

They told me 7.5 lbs based on palpation. He was only 6lbs 1 oz at birth. I had to run out and buy newborn clothes and diapers because I was unprepared. They were definitely off by 1.5 in my cases.

panarama99 · April 2010

Midwife's palpation and growth u/s at 37 weeks estimated 8 lbs. He was born at 38 weeks weighing 7lbs 15 oz...so they were pretty close.

krausen · April 2010

38 week u/s said she weighed 8lb2oz, so we were expecting her to be 9+. We had her 4 days later & she only weighed 7lb6oz. My best friend's baby weighed 6lb8oz at her 38 week u/s, she had her daughter a week later & she weighed 5lb10oz.