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A member 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?
A doctor has provided 1 answer
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
Answered 8/10/2018
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