A member asked:

Hello, my fsh was normal -7, and my lh was -5.6 however, my estrogen was only 36 on day 8! i am only 22 and my doctor said this was a low level. what can cause normal fsh but low estrogen? please help me?

A doctor has provided 1 answer

On "day 8" of a normal cycle, the FSH and LH are normal, but ovarian production of estrogen may still be rising. A repeat of estrogen levels at "day 20-25" should find normal estrogen levels present. If normal breast development, and regular cycles are occurring, estrogen levels with normal FSH and LH change depending on the time the blood test is drawn.

Answered 3/25/2021

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