NOTE: This article is based on research that utilizes the sources cited here as well as the collective experience of the Lab Tests Online Editorial Review Board. This article is periodically reviewed by the Editorial Board and may be updated as a result of the review. Any new sources cited will be added to the list and distinguished from the original sources used.

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S1
A Manual of Laboratory & Diagnostic Tests (sixth edition), Frances Fischbach, editor. Philadelphia: Lippincott Williams & Wilkins, 2000; pp. 235-238, 418-420.

S2
Clinical Guide to Laboratory Tests (third edition), Norbert W. Tietz, editor. Philadelphia: W.B. Saunders & Co., 1995; pp. 216-217, 248-249.

S3
The Hormone Foundation, “Menopause: What Every Woman Should Know” (brochure, 1999)

S4
“Hormones Don’t Protect Women From Heart Disease, Study Says,” Susan Okie, The Washington Post, July 24, 2001; pp. A1, A6.

S5
JoAnn V. Pinkerton, M.D., Department of Obstetrics and Gynecology, University of Virginia Health System, The Women’s Place: Midlife Health Center.

S6
Laurence M. Demers, PhD. Distinguished Professor of Pathology and Medicine, The Pennsylvania State University College of Medicine, The M. S. Hershey Medical Center, Hershey, PA