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 were valid, working links at the time this article was originally prepared, and at each update as indicated here. 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 (e.g., "www.nih.gov") and then by entering the source title in the site's search feature.

S1
Thomas, Clayton L., Editor (1997). Taber’s Cyclopedic Medical Dictionary. F.A. Davis Company, Philadelphia, PA [18th Edition].

S2
Pagana, Kathleen D. & Pagana, Timothy J. (2001). Mosby’s Diagnostic and Laboratory Test Reference 5th Edition: Mosby, Inc., Saint Louis, MO.

S3
Sicherer, S. (1999, January 15). Manifestations of Food Allergy: Evaluation and Management [39 paragraphs]. American Family Physician [On-line serial]. Available FTP: http://www. http://www.aafp.org/afp/990115ap/415.html

S4
American Academy of Family Physicians (1999, January 15). Food Allergies—Just the Facts [13 paragraphs]. American Family Physician [On-line serial]. Available FTP: http://www.aafp.org/afp/990115ap/990115f.html

S5
ARUP. Immunoglobulin E [4 paragraphs]. Guide to Clinical Laboratory Testing [On-line information]. Available FTP: http://www.aruplab.com/guides/clt/tests/clt_ijk4.htm

S6
Sicherer, S. (2001, April 5th last update). Food Allergy Testing: Questions and Answers [18 paragraphs]. Food Allergy News Reprint [On-line information]. Available FTP: http://www.foodallergy.org/topics_archive/testing.html

S7
Formanek, R. (2001, July-August). Food Allergies: When Food Becomes the Enemy [66 paragraphs]. U.S. Food and Drug Administration, FDA Consumer magazine [On-line serial]. Available FTP: http://www.fda.gov/fdac/features/2001/401_food.html

S8
MEDLINEplus (2002, January 2, Updated). Allergies [28 paragraphs]. MEDLINEplus Health Information [On-line Information]. Available FTP: http://www.nlm.nih.gov/medlineplus/ency/article/000812.htm

S9
MEDLINEplus (2002, January 2, Updated). Allergy testing [20 paragraphs]. MEDLINEplus Health Information [On-line Information]. Available FTP: http://www.nlm.nih.gov/medlineplus/ency/article/003519.htm

S10
WAO [2000-2002]. Overview of Allergy, Its Diagnosis and Treatment [7 paragraphs]. World Allergy Organization [On-line information]. Available FTP: http://www.worldallergy.org/public/descriptions_of_allergies/overview.shtml

S11
National Institute of Allergy and Infectious Disease (1998 February). Something in the Air: Airborne Allergens [76 paragraphs]. WebMD [On-line serial]. Available FTP: http://my.webmd.com/content/article/1680.50308

S12
National Institute of Allergy and Infectious Diseases (1999 January, last revision). Food Allergy and Intolerances [ 56 paragraphs]. WebMD [On-line serial]. Available FTP: http://my.webmd.com/content/article/1680.50303

S13
Mellors, R. C., (1999, July 30). Immunopathology, Hypersensitivity Reactions [16 paragraphs]. Weill Medical College of Cornell University [On-line article]. Available FTP: http://edcenter.med.cornell.edu/CUMC_PathNotes/Immunopathology/Immuno_02.html

S14
Allergy glossary. Type IV (delayed or cell-mediated) Hypersensitivity [5 paragraphs]. Health on the Net Foundation [On-line information]. Available FTP: http://www.hon.ch/Library/Theme/Allergy/Glossary/type4.html

S15
Allergy glossary. Antibody (Ab), Immunoglobulin [2 paragraphs], Immunoglobulin E (IgE) [3 paragraphs], and Immunoglobulin G (IgG) [3 paragraphs]. Health on the Net Foundation [On-line information]. Available FTP: http://www.hon.ch/Library/Theme/Allergy/Glossary/ig.html

S16
Merck. Hypersensitivity Disorders, General [10 paragraphs]. The Merck Manual of Diagnosis and Therapy [On-line publication]. Available FTP: http://www.merck.com/pubs/mmanual/section12/chapter148/148a.htm

S17
Merck. Disorders With Type I Hypersensitivity Reactions [106 paragraphs]. The Merck Manual of Diagnosis and Therapy [On-line publication]. Available FTP: http://www.merck.com/pubs/mmanual/section12/chapter148/148b.htm

S18
Merck. Disorders With Type IV Hypersensitivity Reactions [27 paragraphs]. The Merck Manual of Diagnosis and Therapy [On-line publication]. Available FTP: http://www.merck.com/pubs/mmanual/section12/chapter148/148e.htm

S19
Martz, Eric, page maintenance (1997, March 31). Poison Ivy: an Exaggerated Immune Response to Nothing Much [13 paragraphs]. [On-line article]. Available FTP: http://www.bio.umass.edu/immunology/poisoniv.htm

S20
Haskell, J., Webbed by (1996, March 15 last update). Practice Parameters for Allergy Diagnostic Testing [14 paragraphs]. Reprint from: Annals of Allergy, Asthma, & Immunology [Journal], vol 75(6). Available FTP: http://www.jcaai.org/Param/Allergy/Aller3A.HTM