(© 1995–2014). Insulin-Like Growth Factor 1, Serum. Mayo Clinic Mayo Medical Laboratories [On-line information]. Available online at http://www.mayomedicallaboratories.com/test-catalog/Overview/35099 through http://www.mayomedicallaboratories.com. Accessed August 2014.

Wisse, B. (Updated 2013 November 7). Gigantism. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/001174.htm through http://www.nlm.nih.gov. Accessed August 2014.

Kaneshiro, N. (Updated 2013 August 22). Short stature. MedlinePlus Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/003271.htm through http://www.nlm.nih.gov. Accessed August 2014.

Diaz-Thomas, A. et. al. (Updated 2014 May 12)). Gigantism and Acromegaly. Medscape Drugs & Diseases [On-line information]. Available online at http://emedicine.medscape.com/article/925446-overview through http://emedicine.medscape.com. Accessed August 2014.

Eledrisi, M. (Updated 2013 October 17). Growth Hormone Deficiency. Medscape Drugs & Diseases [On-line information]. Available online at http://emedicine.medscape.com/article/120767-overview through http://emedicine.medscape.com. Accessed August 2014.

Rosenbloom, A. and Guevara-Aguirre, J. (Updated 2014 January 23). Growth Hormone Resistance. Medscape Drugs & Diseases [On-line information]. Available online at http://emedicine.medscape.com/article/922902-overview through http://emedicine.medscape.com. Accessed August 2014.

Meikle, A. W. (Updated 2014 January). Growth Hormone Deficiency. ARUP Consult [On-line information]. Available online at http://www.arupconsult.com/Topics/Growthhormone.php?client_ID=LTD#tabs=0 through http://www.arupconsult.com. Accessed August 2014.

Thomas, Clayton L., Editor (1997). Taber's Cyclopedic Medical Dictionary. F.A. Davis Company, Philadelphia, PA [18th Edition].

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

Thorner, M. et. al. (2003 September 24). Advanced Strategies for Achieving IGF-I Control in Acromegaly. The Endocrine Society [CME on Medscape]. Available online at http://www.medscape.com/viewprogram/2638_pnt through http://www.medscape.com.

Cromie, W. (1999 April 22). Growth Factor Raises Cancer Risk. Harvard Gazette Archives [On-line article]. Available online at http://www.news.harvard.edu/gazette/1999/04.22/igf1.story.html through http://www.news.harvard.edu.

IGF-1 (Insulin-Like Growth Factor 1). ARUP Guide to Clinical Laboratory Testing. [On-line information]. Available online at http://www.arup-lab.com/guides/clt/tests/clt_al3b.jsp#1349162 through http://www.arup-lab.com.

Growth Hormone (Human Growth Hormone, HGH, Somatotropin). Acromegaly, ARUP Guide to Clinical Laboratory Testing. [On-line information]. Available online at http://www.arup-lab.com/guides/clt/tests/clt_al3b.jsp#1349162 through http://www.arup-lab.com.

(2002 Int J Cancer). Elevated IGF-1 Linked to Risk of Ovarian Cancer in Younger Women. National Cancer Institute, CTEP, From Int J Cancer 101:549-554. [On-line information]. Available online at http://ctep.info.nih.gov/resources/gcig/news102902.html through http://ctep.info.nih.gov.

Mayo Clinic Staff (2003 May 08). Acromegaly. MayoClinic.com [On-line information]. Available online at http://www.mayoclinic.com/invoke.cfm?id=DS00478 through http://www.mayoclinic.com.

(2002 June). Acromegaly. NIDDK, NIH Publication No. 02-3924 [On-line information]. Available online at http://www.niddk.nih.gov/health/endo/pubs/acro/acro.htm through http://www.niddk.nih.gov.

(2002) Acromegaly/ MedlinePlus Health Information, Medical Encyclopedia [On-line information]. Available online at http://www.nlm.nih.gov/medlineplus/ency/article/000321.htm.

(2004 January 23). Unsportsmanlike behavior. The Washington Times [On-line article]. Available online at http://www.washingtontimes.com/functions/print.php?StoryID=20040122-082812-2585r through http://www.washingtontimes.com.

Kass, L. and Council (2003 October). Chapter Three, Superior Performance. Beyond Therapy: Biotechnology and the Pursuit of Happiness, The President's Council on Bioethics [On-line report]. Available online at http://bioethicsprint.bioethics.gov/reports/beyondtherapy/index.php through http://bioethicsprint.bioethics.gov.

(2003 May 30). Race to develop drug abuse test. BBC News [On-line article]. Available online at http://news.bbc.co.uk/1/hi/health/2946344.stm through http://news.bbc.co.uk.

Acromegaly and Gigantism. Merck Manual Second Home Edition [On-line information]. Available online at http://www.merck.com/mrkshared/mmanual_home2/sec13/ch162/ch162e.jsp through http://www.merck.com.

Clemmons, D. (2004 January 1). The relative roles of growth hormone and IGF-1 in controlling insulin sensitivity. J Clin Invest 113(1): 25-27 [On-line article]. Available online at http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=300772 through http://www.pubmedcentral.nih.gov.

(2003 April 14, Updated). Growth Hormone. Index of the Hypothalamus and Pituitary Gland, Colorado State University Hypertext [On-line information]. Available online at http://arbl.cvmbs.colostate.edu/hbooks/pathphys/endocrine/hypopit/gh.html through http://arbl.cvmbs.colostate.edu.

(2003 February 18, Updated). Growth Hormone and Aging. Index of the Hypothalamus and Pituitary Gland, Colorado State University Hypertext [On-line information]. Available online at http://arbl.cvmbs.colostate.edu/hbooks/pathphys/endocrine/hypopit/ghaging.html through http://arbl.cvmbs.colostate.edu.

Pagana, Kathleen D. & Pagana, Timothy J. (© 2007). Mosby's Diagnostic and Laboratory Test Reference 8th Edition: Mosby, Inc., Saint Louis, MO. Pp 879 880.

Clarke, W. and Dufour, D. R., Editors (2006). Contemporary Practice in Clinical Chemistry. AACC Press, Washington, DC. Grenache, D and Willis, M., Chapter 31, Hypothalamic, Pituitary, and Gonadal Disorders. Pp 351-363.

Wu, A. (2006). Tietz Clinical Guide to Laboratory Tests, Fourth Edition. Saunders Elsevier, St. Louis, Missouri. Pp 626-628.

Sheppard, M. (2007 April 3). Growth Hormone Assay Standardization: An Important Clinical Advance. Medscape from Clin Endocrinol. 2007;66(2):157-161. [On-line information]. Available online at http://www.medscape.com/viewarticle/553885 through http://www.medscape.com. Accessed 8/18/07.

(2007 April). Acromegaly. NIDDK, NIH Publication No. 02-3924 [On-line information]. Available online at http://www.niddk.nih.gov/health/endo/pubs/acro/acro.htm through http://www.niddk.nih.gov. Accessed September 2007.

William E. Winter, MD, FACB. laboratory tests adjunct board member.

(© 1995-2010). Unit Code 15867: Insulin-Like Growth Factor 1 (IGF-1), Serum. Mayo Clinic, Mayo Medical Laboratories [On-line information]. Available online at http://www.mayomedicallaboratories.com/test-catalog/Overview/15867 through http://www.mayomedicallaboratories.com. Accessed October 2010.

Meikle, W. and Roberts, W. (Updated 2010 May). Growth Hormone Deficiency. ARUP Consult [On-line information]. Available online at http://www.arupconsult.com/Topics/Growthhormone.php?client_ID=LTD through http://www.arupconsult.com. Accessed October 2010.

Kemp, S. (Updated 2010 May 5). Growth Hormone Deficiency. eMedicine [On-line information]. Available online at http://emedicine.medscape.com/article/923688-overview through http://emedicine.medscape.com. Accessed October 2010.

(2008 May). Acromegaly. National Endocrine and Metabolic Diseases Information Service [On-line information]. Available online at http://www.endocrine.niddk.nih.gov/pubs/acro/acro.htm through http://www.endocrine.niddk.nih.gov. Accessed October 2010.

Savage, M. et. al. (2010 June 23). The Continuum of Growth Hormone–IGF-I Axis Defects Causing Short Stature: Diagnostic and Therapeutic Challenges. Medscape Today from Clin Endocrinol. 2010;72(6):721-728. [On-line information]. Available online at http://www.medscape.com/viewarticle/722763 through http://www.medscape.com. Accessed October 2010.

Pagana, K. D. & Pagana, T. J. (© 2007). Mosby's Diagnostic and Laboratory Test Reference 8th Edition: Mosby, Inc., Saint Louis, MO. Pp 879-880.

Wu, A. (© 2006). Tietz Clinical Guide to Laboratory Tests, 4th Edition: Saunders Elsevier, St. Louis, MO. Pp 626-631.

Kronenberg, H. et. al. (© 2008). Williams Textbook of Endocrinology, 11th Edition: Saunders Elsevier, Philadelphia, PA. Pp 891-906.