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A member asked:
Fetus measurements: 57mm 12 weeks gestation / 62mm 12 wks+4days gestation. are measurements this precise to have this difference in size in 4 days?
A doctor has provided 1 answer
Sort of: Yes, the measurements on average do correspond to these dates and they are fairly accurate, but not exact. Also it is dependent on how the ultrasound tech measures it. So there are plenty of sources of mild error.
Answered 11/25/2013
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