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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Alberta Clinical Practice Guidelines Steering Committee (2001 June, Revised). Laboratory Endocrine Testing Guidelines (pdf) [101 paragraphs]. Alberta Medical Association [On-line guidelines]. Available FTP: http://www.albertadoctors.org/resources/endocrinology.html

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Lobo, R. and Carmina, E. (2000 June 20). The Importance of Diagnosing the Polycystic Ovary Syndrome [23 paragraphs]. Annals of Internal Medicine [On-line Journal, Information from Ann Intern Med. 2000;132:989-993]. Available FTP: http://www.annals.org/issues/v132n12/full/200006200-00010.html

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Clarke, W. and Dufour, D. R., Editors (2006). Contemporary Practice in Clinical Chemistry, AACC Press, Washington, DC. Cook, J. Chapter 33 Adrenal Disorders, pp 375-385.

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Wu, A. (2006). Tietz Clinical Guide to Laboratory Tests, Fourth Edition. Saunders Elsevier, St. Louis, Missouri. Pp 334-339.

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Hurd, R. (2006 October 25). DHEA-sulfate - serum [13 paragraphs]. MedlinePlus Medical Encyclopedia [On-line information]. Accessed on: 7/21/07. Available FTP: http://www.nlm.nih.gov/medlineplus/ency/article/003717.htm