1. Evaluation and Management of Amenorrhea
Bryan McIver, M.B., M.R.C.P.(U.K.), Ph.D., Susan A. Romanski, M.D., Todd B. Nippoldt, M.D. 
Mayo Clinic Proceedings 
Volume 72, Issue 12, Pages (December 1997)
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Copyright © 1997 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1
Suggested algorithm for investigation of secondary amenorrhea. The progestin challenge and cyclic estrogen/progestin challenge may be unnecessary in certain clinical circumstances, and measurement of estradiol, LH, and FSH is often substituted. Patients in the diagnostic groups represented in this algorithm may need further appropriate assessment and management of underlying problem. CAH = congenital adrenal hyperplasia; FSH follicle-stimulating hormone; LH = luteinizing hormone; LH.FSH = LH to FSH ratio; PCOS = polycystic ovarian syndrome.
Mayo Clinic Proceedings  , DOI: ( / )
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