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A member asked:
Does ultrasound accurately measure pregnancy or just go by lmp?
A doctor has provided 1 answer
Ultrasound is better: Ultrasound is certainly a better estimator of gestational age than LMP in the first trimester and the first half of the pregnancy. The LMP is often off. Many women will experience some spotting at 4 weeks and consider that a menstrual period. The ultrasound can also evaluate the fetus and placenta and detect potential problems early.
Answered 2/13/2015
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