A 22-year-old female asked:
Fetus was measuring accurate at 5w3d and 8w4d u/s. but this time i should be 11w3d but u/s showed only 10w1d with a strong heartbeat. why?
1 doctor answer • 1 doctor weighed in
Obstetrics and Gynecology 22 years experience
Margin of error: There are various margins of error at various gestational ages on sonograms. The margin of error in a first trimester sonogram is about 7 days. You can confirm with your doctor but it appears you are within the normal range
3.2k viewsAnswered >2 years ago
Last updated Aug 10, 2018
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