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A member asked:
Third trimester dating accuracy says plus minus 30 days. how is this true if babies with iugr sometimes measure even up to 5-8 weeks behind??
A doctor has provided 1 answer
Serial: measurements, every two weeks, can be compared to expected size increase over the two weeks. Best time to confirm due date is a first trimester ultrasound, when the range is plus or minus a few days.
Answered 2/20/2020
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