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A 44-year-old member asked:

can you tell me how precise are ultrasounds about fetal weight?

1 doctor answer2 doctors weighed in
Dr. Ronald Holzman
Mammography, Breast Ultrasound 47 years experience
See below. : They are pretty accurate. Any variations will be due to operator dependence, how accurately measurements were taken and position of the fetus. Measurement/weight charts were developed over many years, by several different studies, all showing some degree of difference. Although not 100% dead on, ultrasound determination of weight should be considered as the most accurate guesstimate.

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Similar questions

A 47-year-old member asked:

29th week fetal weight is 1500g is it normal?

1 doctor answer2 doctors weighed in
Dr. Byron Hapner
Specializes in Obstetrics and Gynecology
Yes: That's just about in the middle of normal range.
Maryville, TN
A 24-year-old female asked:

What is the average fetal weight at 30w3d?

1 doctor answer2 doctors weighed in
Dr. Herb Coussons
Obstetrics and Gynecology 29 years experience
3 pounds: The average weight is 3 pounds now. The normal range is considered 2pounds 4oz up to 3 pounds 8 ounces. If very small or very large extra monitoring, ultrasounds or treatment may be needed.

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Last updated Jul 16, 2014
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