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.

We have included the web address to online sources used in developing and reviewing this article for documentation purposes only. Links included on this Sources page are valid, working links at the time they are posted. Please be aware that the source owner may, from time to time, reorganize the source web site, which can result in broken links on our pages. If you wish to access a source and come across a broken link, you may still be able to access it by entering just the parent web address in your browser's address bar (eg, "www.nih.gov") and then by entering the source title in the site's search feature.

Wu, A. (2006). Tietz Clinical Guide to Laboratory Tests, Fourth Edition. Saunders Elsevier, St. Louis, Missouri. Pp 226-230.

Pacak, K. et. al. (2007 March 21). Pheochromocytoma: Recommendations for Clinical Practice from the First International Symposium. Medscape from Nature Clinical Practice Endocrinology & Metabolism [On-line information]. Available online at http://www.medscape.com/viewarticle/553428 through http://www.medscape.com. Accessed on 8-24-08.

Sweeney, A. et. al. (2007 September 11, Updated). Pheochromocytoma. eMedicine [On-line information]. Available online at http://www.emedicine.com/med/TOPIC1816.HTM through http://www.emedicine.com. Accessed on 8-24-08.

Van Voorhees, B. (2007 May 17, Updated). Catecholamines – urine. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003613.htm. Accessed on 8-24-08.

Van Voorhees, B. (2007 January 22, Updated). Catecholamines – blood. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003561.htm. Accessed on 8-24-08.

Nanda, R. (2006 September 11, Updated). Pheochromocytoma. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/000340.htm. Accessed on 8-24-08.

Levy, A. (2006 May 22, Updated). Neuroblastoma. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/001408.htm. Accessed on 8-24-08.

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Pagana, Kathleen D. & Pagana, Timothy J. (2001). Mosby’s Diagnostic and Laboratory Test Reference 5th Edition: Mosby, Inc., Saint Louis, MO.

Martell, B. Updated (2003 May 20, Updated). Catecholamines – blood. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003561.htm.

Webner, D. Updated (2003 August 18, Updated). Catecholamines – urine. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003613.htm.

Brose, M. Updated (2004 August 3, Updated). Pheochromocytoma. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/000340.htm.

(2002 December, Reviewed). Pheochromocytoma. UrologyHealth.org [On-line information]. Available online at http://urologyhealth.org/adult/index.cfm?cat=02&topic=114 through http://urologyhealth.org.

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