A member asked:

Tvus: can u/s differentiate between follicle and copus luteum? so would ultrasound be able to confirm retrospectively that ovulation has occurred or only see a follicle which could be preovulatory, postovulatory. how long after ov can evidence beseen?

A doctor has provided 1 answer
Dr. Mary Vanko answered

Specializes in Obstetrics and Gynecology

The corpus luteum is smaller than the follicle that you would ovulate. A progesterone level at day 21 would confirm ovulation.

Answered 12/12/2022

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