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A member asked:
I've heard from a few people that early ultrasounds can be off up to 3 weeks. is that true? i think that i am 4 weeks further along than what u.s reads
A doctor has provided 1 answer
It depends: At 6weeks ultrasound accuracy is plus or minus 5days. Late in pregnancy the range becomes up to plus or minus over 2 weeks.
Answered 7/9/2015
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