A 34-year-old woman comes to the clinic because of left ...

Prolactin (choice D) elevations are a common cause of amenorrhea. It should be part of the secondary evaluation of amenorrhea if pregnancy tests are negative. If levels are elevated, an MRI of the pituitary should follow. Elevated testosterone (choice E) may cause amenorrhea and is most typically elevated in polycystic ovary syndrome. ................
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